{"id":1092,"date":"2020-05-31T11:30:16","date_gmt":"2020-05-31T03:30:16","guid":{"rendered":"https:\/\/summid.icu\/?p=1092"},"modified":"2023-06-01T17:14:52","modified_gmt":"2023-06-01T09:14:52","slug":"leetcode_%e5%89%91%e6%8c%87offer%e9%9d%a2%e8%af%95%e9%a2%98%e4%b8%8b%ef%bc%89-2","status":"publish","type":"post","link":"https:\/\/summid.icu\/index.php\/2020\/05\/31\/leetcode_%e5%89%91%e6%8c%87offer%e9%9d%a2%e8%af%95%e9%a2%98%e4%b8%8b%ef%bc%89-2\/","title":{"rendered":"leetCode_\u5251\u6307offer\u9762\u8bd5\u9898(\u4e0b\uff09"},"content":{"rendered":"<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989839. \u6570\u7ec4\u4e2d\u51fa\u73b0\u6b21\u6570\u8d85\u8fc7\u4e00\u534a\u7684\u6570\u5b57<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6570\u7ec4\u4e2d\u6709\u4e00\u4e2a\u6570\u5b57\u51fa\u73b0\u7684\u6b21\u6570\u8d85\u8fc7\u6570\u7ec4\u957f\u5ea6\u7684\u4e00\u534a\uff0c\u8bf7\u627e\u51fa\u8fd9\u4e2a\u6570\u5b57\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4f60\u53ef\u4ee5\u5047\u8bbe\u6570\u7ec4\u662f\u975e\u7a7a\u7684\uff0c\u5e76\u4e14\u7ed9\u5b9a\u7684\u6570\u7ec4\u603b\u662f\u5b58\u5728\u591a\u6570\u5143\u7d20\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_39_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"273\" height=\"131\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_39_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-556\"\/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e00<\/strong>\uff1a\u5148\u7ed9\u6570\u7ec4\u6392\u5e8f\uff0c\u90a3\u4e48\u6570\u7ec4\u4e2d\u95f4\u7684\u6570\u5c31\u662f\u201c\u4f17\u6570\u201d\uff0c\u8fd4\u56de\u5373\u53ef\u3002<br><\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0majorityElement(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sort(nums.begin(),nums.end());\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0m=nums.size()\/2;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0nums[m];\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u590d\u6742\u5ea6\u662fnlogn2\uff0c\u6bd4\u8f83\u6162<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e8c<\/strong>\uff1a\u4f7f\u7528hash\u8868\u3002\u5c06\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u503c\u51fa\u73b0\u7684\u6b21\u6570\u8bb0\u5f55\u8fdbhash\u8868\uff0c\u5f53\u53d1\u73b0\u51fa\u73b0\u7684\u6b21\u6570\u8d85\u8fc7\u6570\u7ec4\u7684\u4e00\u534a\u65f6\uff0c\u8fd4\u56de\u6570\u7ec4\u5f53\u524d\u4e0b\u6807\u7684\u503c\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0majorityElement(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unordered_map&lt;int,int>\u00a0mp;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0i;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(i=0;i&lt;nums.size();i++)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mp[nums[i]]++;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mp[nums[i]]>nums.size()\/2)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0nums[i];\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<p><a href=\"https:\/\/summid.icu\/wp-admin\/edit.php?post_type=post\"><\/a><\/p>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u548c\u7a7a\u95f4\u590d\u6742\u5ea6\u4e3aN<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e09<\/strong>\uff1a\u539f\u5730\u904d\u5386\uff0c\u6469\u5c14\u6295\u7968\u6cd5\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6838\u5fc3\u7406\u5ff5\u4e3a\u201c\u6b63\u8d1f\u62b5\u6d88\u201d\uff1b\u65f6\u95f4\u548c\u7a7a\u95f4\u590d\u6742\u5ea6\u5206\u522b\u4e3aN\u548c1\uff1b\u662f\u672c\u9898\u6700\u4f73\u89e3\u6cd5\u3002<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7968\u6570\u548c<\/strong>\uff1a\u7531\u4e8e\u4f17\u6570\u51fa\u73b0\u7684\u6b21\u6570\u8d85\u8fc7\u6570\u7ec4\u957f\u5ea6\u7684\u4e00\u534a\uff1b\u82e5\u8bb0\u4f17\u6570\u7684\u7968\u6570\u4e3a+1\uff0c\u975e\u4f17\u6570\u7684\u7968\u6570\u4e3a-1\uff0c\u5219\u4e00\u5b9a\u6709\u6240\u6709\u6570\u5b57\u7684\u7968\u6570\u548c&gt;0\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7968\u6570\u6b63\u8d1f\u62b5\u6d88<\/strong>\uff1a\u8bbe\u6570\u7ec4nums\u4e2d\u7684\u4f17\u6570\u4e3ax\uff0c\u6570\u7ec4\u957f\u5ea6\u4e3an\u3002\u82e5nums\u7684\u524da\u4e2a\u6570\u5b57\u7684\u7968\u6570\u548c=0\uff0c\u5219\u6570\u7ec4\u540e\uff08n-a\uff09\u4e2a\u6570\u5b57\u7684\u7968\u6570\u548c\u4e00\u5b9a\u4ecd\u662f&gt;0\uff08\u5373\u540e\uff08n-a\uff09\u4e2a\u6570\u5b57\u7684\u4f17\u6570\u4ecd\u4e3ax\uff09\u3002<\/span><\/li>\n<\/ul>\n<p>\u4e0b\u9762\u6765\u770b\u7b97\u6cd5\u6d41\u7a0b\uff1a<\/p>\n\n\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0majorityElement(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0votes=0;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0x;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;nums.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(votes==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0x=nums[i];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(nums[i]==x)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0votes++;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0votes--;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0x;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989840. \u6700\u5c0f\u7684k\u4e2a\u6570<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u5165\u6574\u6570\u6570\u7ec4 arr \uff0c\u627e\u51fa\u5176\u4e2d\u6700\u5c0f\u7684 k \u4e2a\u6570\u3002\u4f8b\u5982\uff0c\u8f93\u51654\u30015\u30011\u30016\u30012\u30017\u30013\u30018\u8fd98\u4e2a\u6570\u5b57\uff0c\u5219\u6700\u5c0f\u76844\u4e2a\u6570\u5b57\u662f1\u30012\u30013\u30014\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_40_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"270\" height=\"339\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_40_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-576\"  sizes=\"auto, (max-width: 270px) 100vw, 270px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e00<\/strong>\uff1a\u5148\u7ed9\u6570\u7ec4\u6392\u5e8f\uff0c\u7136\u540e\u8f93\u51fa\u524dk\u4e2a\u6570\u5373\u53ef\u3002\u65f6\u95f4\u590d\u6742\u5ea6\u4e3anlog2n\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e8c<\/strong>\uff1a\u7528\u5806\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9996\u5148\u60f3\u5230\u7684\u662f\u521b\u5efa\u4e00\u4e2a\u5c0f\u9876\u5806\uff0c\u628a\u6240\u6709\u5143\u7d20\u88c5\u8fdb\u53bb\uff0c\u7136\u540e\u5c06k\u4e2a\u5143\u7d20\u51fa\u961f\u3002\u4f46\u662f\u8fd9\u6837\u505a\u6548\u7387\u5e76\u4e0d\u9ad8\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e5f\u4f1a\u662fnlog2n\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0getLeastNumbers(vector&lt;int>&amp;\u00a0arr,\u00a0int\u00a0k)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u7533\u8bf7\u5c0f\u9876\u5806\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0priority_queue&lt;int,vector&lt;int>,greater&lt;int>>\u00a0q;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;arr.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.push(arr[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0res;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0j=0;j&lt;k;++j)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res.push_back(q.top());\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.pop();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5927\u9876\u5806\uff0c\u5806\u91cc\u53ea\u7ef4\u62a4k\u4e2a\u5143\u7d20\u3002\u5148\u5c06k\u4e2a\u5143\u7d20\u5165\u5806\uff0c\u540e\u9762\u7684\u5143\u7d20\u4e0e\u5806\u9876\u5143\u7d20\u6bd4\u8f83\uff0c\u5982\u679c\u6bd4\u5806\u9876\u5143\u7d20\u5c0f\uff0c\u5219\u5806\u9876\u5143\u7d20\u51fa\u961f\uff0c\u8be5\u5143\u7d20\u5165\u961f\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u590d\u6742\u5ea6\u964d\u4f4e\u4e3anlog2k\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0getLeastNumbers(vector&lt;int>&amp;\u00a0arr,\u00a0int\u00a0k)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u7533\u8bf7\u5927\u9876\u5806\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0priority_queue&lt;int>\u00a0q;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;k;i++)\/\/\u524dk\u4e2a\u5143\u7d20\u5165\u961f\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.push(arr[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0res;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(k==0)\u00a0return\u00a0res;\u00a0\/\/\u6392\u9664k=0\u7684\u60c5\u51b5\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0j=k;j&lt;arr.size();++j)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(arr[j]&lt;q.top())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.pop();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.push(arr[j]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0n=0;n&lt;k;++n)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res.push_back(q.top());\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0q.pop();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\u4e09<\/strong>\uff1a\u5feb\u6392\u53d8\u5f62<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u201c\u67e5\u627e\u7b2ck\u5927\u7684\u5143\u7d20\u201d\u662f\u4e00\u7c7b\u7b97\u6cd5\u95ee\u9898\uff0c\u79f0\u4e3a<strong>\u9009\u62e9\u95ee\u9898<\/strong>\u3002\u627e\u7b2ck\u5927\u7684\u6570\uff0c\u6216\u8005\u627e\u524dk\u5927\u7684\u6570\uff0c\u6709\u4e00\u4e2a\u7ecf\u5178\u7684quick select\uff08\u5feb\u901f\u9009\u62e9\uff09\u7b97\u6cd5\u3002\u8fd9\u4e2a\u540d\u5b57\u548cquick sort\uff08\u5feb\u901f\u6392\u5e8f\uff09\u770b\u8d77\u6765\u5f88\u50cf\uff0c\u7b97\u6cd5\u7684\u601d\u60f3\u4e5f\u548c\u5feb\u901f\u6392\u5e8f\u7c7b\u4f3c\uff0c\u90fd\u662f\u5206\u6cbb\u6cd5\u7684\u601d\u60f3\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_40_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"675\" height=\"137\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_40_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-579\"  sizes=\"auto, (max-width: 675px) 100vw, 675px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u4e2apartition\u64cd\u4f5c\u662f\u539f\u5730\u8fdb\u884c\u7684\uff0c\u9700\u8981O\uff08n\uff09\u7684\u65f6\u95f4\uff0c\u63a5\u4e0b\u6765\uff0c\u5feb\u901f\u6392\u5e8f\u4f1a\u9012\u5f52\u5730\u6392\u5e8f\u5de6\u53f3\u4e24\u4fa7\u7684\u6570\u7ec4\u3002\u800c\u5feb\u901f\u9009\u62e9\u7b97\u6cd5\u7684\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c\u63a5\u4e0b\u6765\u53ea\u9700\u8981\u9012\u5f52\u5730\u9009\u62e9\u4e00\u4fa7\u7684\u6570\u7ec4\u3002\u5feb\u901f\u9009\u62e9\u7b97\u6cd5\u76f8\u5f53\u4e8e\u4e00\u4e2a\u201c\u4e0d\u5b8c\u5168\u201d\u7684\u5feb\u901f\u6392\u5e8f\uff0c\u56e0\u4e3a\u6211\u4eec\u53ea\u9700\u8981\u77e5\u9053\u6700\u5c0f\u7684k\u4e2a\u6570\u662f\u54ea\u4e9b\uff0c\u5e76\u4e0d\u9700\u8981\u77e5\u9053\u5b83\u4eec\u7684\u987a\u5e8f\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u7684\u76ee\u7684\u662f\u5bfb\u627e\u6700\u5c0f\u7684k\u4e2a\u6570\u3002\u5047\u8bbe\u7ecf\u8fc7\u4e00\u6b21partition\u64cd\u4f5c\uff0c\u67a2\u7ebd\u5143\u7d20\u4f4d\u4e8e\u4e0b\u6807m\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5de6\u4fa7\u7684\u6570\u7ec4\u6709m\u4e2a\u5143\u7d20\uff0c\u662f\u539f\u6570\u7ec4\u4e2d\u6700\u5c0f\u7684m\u4e2a\u6570\u3002\u90a3\u4e48\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u82e5 k = m \uff0c\u6211\u4eec\u5c31\u627e\u5230\u4e86\u6700\u5c0f\u7684k\u4e2a\u6570\uff0c\u5c31\u662f\u5de6\u4fa7\u7684\u6570\u7ec4\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u82e5 k &lt; m \uff0c\u5219\u6700\u5c0f\u7684k\u4e2a\u6570\u4e00\u5b9a\u90fd\u5728\u5de6\u4fa7\u6570\u7ec4\u4e2d\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5bf9\u5de6\u4fa7\u6570\u7ec4\u9012\u5f52\u5730partition\u5373\u53ef\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u82e5 k &gt; m \uff0c\u5219\u5de6\u4fa7\u6570\u7ec4\u4e2d\u7684m\u4e2a\u6570\u90fd\u5c5e\u4e8e\u6700\u5c0f\u7684k\u4e2a\u6570\uff0c\u6211\u4eec\u8fd8\u9700\u8981\u5728\u53f3\u4fa7\u6570\u7ec4\u4e2d\u5bfb\u627e\u6700\u5c0f\u7684 k &#8211; m \u4e2a\u6570\uff0c\u5bf9\u53f3\u4fa7\u6570\u7ec4\u9012\u5f52\u5730partition\u5373\u53ef\u3002<\/span><\/li>\n<\/ul>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0getLeastNumbers(vector&lt;int>&amp;\u00a0arr,\u00a0int\u00a0k)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0res;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(k==0||arr.empty())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0partition(arr,0,arr.size()-1,k-1);\/\/\u8fd9\u91cc\u8981k-1\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;k;++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res.push_back(arr[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0void\u00a0partition(vector&lt;int>&amp;\u00a0arr,int\u00a0lo,int\u00a0hi,int\u00a0k)\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0m=select(arr,lo,hi);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(m==k)\u00a0\/\/\u524dk\u4e2a\u6570\u5df2\u7ecf\u627e\u5230\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0if(m>k)\u00a0\u00a0\/\/\u524dk\u4e2a\u6570\u5728\u5de6\u5e8f\u5217\u91cc\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0partition(arr,lo,m-1,k);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0\u00a0\/\/\u524dk\u4e2a\u6570\u5728\u53f3\u5e8f\u5217\u91cc\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0partition(arr,m+1,hi,k);\n\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\/\/\u5feb\u901f\u6392\u5e8f\u627e\u67a2\u7ebd\u503c\u4e0b\u6807\n\u00a0\u00a0\u00a0\u00a0int\u00a0select(vector&lt;int>&amp;\u00a0arr,int\u00a0lo,int\u00a0hi)\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0j=lo;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0num=arr[lo];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=lo+1;i&lt;=hi;++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(arr[i]&lt;num)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0swap(arr[j+1],arr[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0j++;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0swap(arr[j],arr[lo]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0j;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7a7a\u95f4\u590d\u6742\u5ea6O\uff081\uff09\uff0c\u671f\u671b\u65f6\u95f4\u590d\u6742\u5ea6O\uff08n\uff09\uff0c\u6700\u574f\u65f6\u65f6\u95f4\u590d\u6742\u5ea6O\uff08n^2\uff09\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u5bf9\u4e8e\u7b2c\u4e00\u6b21\u8c03\u7528partition\u65f6\uff0ck-1\u53c2\u6570\u7684\u8bf4\u660e<\/strong>\uff1a\u82e5k\u7684\u5927\u5c0f\u6070\u597d\u662f\u6570\u7ec4\u5143\u7d20\u4e2a\u6570\u7684\u5927\u5c0f\uff0c\u90a3\u4e48\u6700\u540e\u4e00\u5b9a\u4f1a\u8c03\u7528partition(arr,m+1,hi,k)\uff1b\uff0c\u56e0\u4e3am\u6c38\u8fdc\u53ea\u4f1a\u5c0f\u4e8ek\u3002\u800c\u5728\u9012\u5f52\u540em+1\u5c06\u8d85\u51fa\u6570\u7ec4\u4e0b\u6807\u8303\u56f4\uff0c\u5bfc\u81f4\u9519\u8bef\uff0c\u56e0\u6b64\u7b2c\u4e00\u6b21\u8c03\u7528\u8981k-1\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>partition\u51fd\u6570\u4e2d\uff0c\u4e24\u6b21\u9012\u5f52\u8c03\u7528\u4f20\u5165\u7684\u53c2\u6570\u4e3a\u4ec0\u4e48\u90fd\u662fk\uff1f<\/strong>\u7279\u522b\u662f\u7b2c\u4e8c\u4e2a\u8c03\u7528\uff0c\u6211\u4eec\u5728\u53f3\u4fa7\u6570\u7ec4\u4e2d\u5bfb\u627e\u6700\u5c0f\u7684k-m\u4e2a\u6570\uff0c\u4f46\u662f\u5bf9\u4e8e\u6574\u4e2a\u6570\u7ec4\u800c\u8a00\uff0c\u8fd9\u662f\u6700\u5c0f\u7684k\u4e2a\u6570\u3002\u6240\u4ee5\u8bf4\uff0c\u51fd\u6570\u8c03\u7528\u4f20\u5165\u7684\u53c2\u6570\u5e94\u8be5\u4e3ak\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u4f18\u5148\u961f\u5217\u548c\u5feb\u901f\u9009\u62e9\u7684\u6bd4\u8f83\uff1a<\/strong><\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u770b\u8d77\u6765\u5206\u6cbb\u6cd5\u7684\u5feb\u901f\u9009\u62e9\u7b97\u6cd5\u7684\u65f6\u95f4\u3001\u7a7a\u95f4\u590d\u6742\u5ea6\u90fd\u4f18\u4e8e\u4f7f\u7528\u5806\u7684\u65b9\u6cd5\uff0c\u4f46\u662f\u8981\u6ce8\u610f\u5feb\u901f\u9009\u62e9\u7b97\u6cd5\u7684\u51e0\u70b9\u5c40\u9650\u6027\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b97\u6cd5\u9700\u8981\u4fee\u6539\u539f\u6570\u7ec4\uff0c\u5982\u679c\u539f\u6570\u7ec4\u4e0d\u80fd\u4fee\u6539\u7684\u8bdd\uff0c\u8fd8\u9700\u8981\u62f7\u8d1d\u4e00\u4efd\u6570\u7ec4\uff0c\u7a7a\u95f4\u590d\u6742\u5ea6\u5c31\u4e0a\u53bb\u4e86<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7b97\u6cd5\u9700\u8981\u4fdd\u5b58\u6240\u6709\u7684\u6570\u636e\u3002\u5982\u679c\u628a\u6570\u636e\u770b\u6210\u8f93\u5165\u6d41\u7684\u8bdd\uff0c\u4f7f\u7528\u5806\u7684\u65b9\u6cd5\u662f\u6765\u4e00\u4e2a\u5904\u7406\u4e00\u4e2a\uff0c\u4e0d\u9700\u8981\u4fdd\u5b58\u6570\u636e\uff0c\u53ea\u9700\u8981\u4fdd\u5b58k\u4e2a\u5143\u7d20\u7684\u6700\u5927\u5806\u3002\u800c\u5feb\u901f\u9009\u62e9\u7684\u65b9\u6cd5\u9700\u8981\u5148\u4fdd\u5b58\u4e0b\u6765\u6240\u6709\u7684\u6570\u636e\uff0c\u518d\u8fd0\u884c\u7b97\u6cd5\u3002\u5f53\u6570\u636e\u91cf\u975e\u5e38\u5927\u7684\u65f6\u5019\uff0c\u751a\u81f3\u5185\u5b58\u90fd\u653e\u4e0d\u4e0b\u7684\u65f6\u5019\uff0c\u5c31\u9ebb\u70e6\u4e86\u3002\u6240\u4ee5\u5f53\u6570\u636e\u91cf\u5927\u7684\u65f6\u5019\u8fd8\u662f\u7528\u57fa\u4e8e\u5806\u7684\u65b9\u6cd5\u6bd4\u8f83\u597d\u3002<\/span><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989841. \u6570\u636e\u6d41\u4e2d\u7684\u4e2d\u4f4d\u6570<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u4f55\u5f97\u5230\u4e00\u4e2a\u6570\u636e\u6d41\u4e2d\u7684\u4e2d\u4f4d\u6570\uff1f\u5982\u679c\u4ece\u6570\u636e\u6d41\u4e2d\u8bfb\u51fa\u5947\u6570\u4e2a\u6570\u503c\uff0c\u90a3\u4e48\u4e2d\u4f4d\u6570\u5c31\u662f\u6240\u6709\u6570\u503c\u6392\u5e8f\u4e4b\u540e\u4f4d\u4e8e\u4e2d\u95f4\u7684\u6570\u503c\u3002\u5982\u679c\u4ece\u6570\u636e\u6d41\u4e2d\u8bfb\u51fa\u5076\u6570\u4e2a\u6570\u503c\uff0c\u90a3\u4e48\u4e2d\u4f4d\u6570\u5c31\u662f\u6240\u6709\u6570\u503c\u6392\u5e8f\u4e4b\u540e\u4e2d\u95f4\u4e24\u4e2a\u6570\u7684\u5e73\u5747\u503c\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4f8b\u5982\uff0c<br><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">[2,3,4]&nbsp;\u7684\u4e2d\u4f4d\u6570\u662f 3<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">[2,3] \u7684\u4e2d\u4f4d\u6570\u662f (2 + 3) \/ 2 = 2.5<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8bbe\u8ba1\u4e00\u4e2a\u652f\u6301\u4ee5\u4e0b\u4e24\u79cd\u64cd\u4f5c\u7684\u6570\u636e\u7ed3\u6784\uff1a<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">void addNum(int num) &#8211; \u4ece\u6570\u636e\u6d41\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u6574\u6570\u5230\u6570\u636e\u7ed3\u6784\u4e2d\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">double findMedian() &#8211; \u8fd4\u56de\u76ee\u524d\u6240\u6709\u5143\u7d20\u7684\u4e2d\u4f4d\u6570\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_41_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"514\" height=\"393\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_41_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-584\"  sizes=\"auto, (max-width: 514px) 100vw, 514px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\uff1a\u4f7f\u7528\u5927\u9876\u5806\u4e0e\u5c0f\u9876\u5806<\/strong><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5efa\u7acb\u4e00\u4e2a <strong>\u5c0f\u9876\u5806A<\/strong> \u548c <strong>\u5927\u9876\u5806B<\/strong> \uff0c\u5404\u4fdd\u5b58\u5217\u8868\u7684\u4e00\u534a\u5143\u7d20\uff0c\u4e14\u89c4\u5b9a\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">A \u4fdd\u5b58 <strong>\u8f83\u5927<\/strong> \u7684\u4e00\u534a\uff0c\u957f\u5ea6\u4e3aN\/2\uff08N\u4e3a\u5076\u6570\uff09\u6216(N+1)\/2\uff08N\u4e3a\u5947\u6570\uff09\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">B \u4fdd\u5b58 <strong>\u8f83\u5c0f<\/strong> \u7684\u4e00\u534a\uff0c\u957f\u5ea6\u4e3aN\/2\uff08N\u4e3a\u5076\u6570\uff09\u6216(N-1)\/2\uff08N\u4e3a\u5947\u6570\uff09\uff1b<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u968f\u540e\uff0c\u4e2d\u4f4d\u6570\u53ef\u4ec5\u6839\u636e A\u3001B\u7684\u5806\u9876\u5143\u7d20\u8ba1\u7b97\u5f97\u5230\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u91cc\u7684\u201c\u8f83\u5927\u201d\u4e0e\u201c\u8f83\u5c0f\u201d\u6307\u7684\u662f\u5143\u7d20\u503c\u7684\u5927\u5c0f\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_41_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"347\" height=\"321\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_41_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-586\"  sizes=\"auto, (max-width: 347px) 100vw, 347px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8bbe\u5143\u7d20\u603b\u6570\u4e3a N = m + n \uff0c\u5176\u4e2d m \u548c n \u5206\u522b\u4e3a A \u548c B \u4e2d\u7684\u5143\u7d20\u4e2a\u6570\u3002<\/span><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e3a\u4ec0\u4e48\u8981\u7528\u5927\u9876\u5806\u5b58\u653e\u8f83\u5c0f\u7684\u4e00\u534a\uff0c\u5c0f\u9876\u5806\u5b58\u653e\u8f83\u5927\u7684\u4e00\u534a\u5462\uff1f<br><\/span><\/strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u56e0\u4e3a\u8be5\u9898\u6211\u4eec\u9700\u8981\u8bbf\u95ee\u4e2d\u4f4d\u6570\uff0c\u4e24\u4e2a\u5806\u5408\u5e76\u8d77\u6765\u53ef\u4ee5\u770b\u4f5c\u6392\u597d\u5e8f\u7684\u5217\u8868\uff0c\u800c\u5806\u7684\u6027\u8d28\u5bfc\u81f4\u6211\u4eec\u53ea\u80fd\u5bf9\u5806\u9876\u5143\u7d20\u8fdb\u884c\u8bfb\u53d6\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u628a\u4e24\u4e2a\u5806\u7684\u5806\u9876\u653e\u5728\u4e00\u8d77\u3002<\/span><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><br><\/span><\/strong><\/p>\n<p><strong><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><span style=\"background-color: #ccffff;\">addNum(num)<\/span> \u51fd\u6570\uff1a<\/span><\/strong><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53 m == n \uff08\u5373N\u4e3a<strong>\u5076\u6570<\/strong>\uff09\uff1a\u9700\u5411 A \u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\u3002\u5b9e\u73b0\u65b9\u6cd5\uff1a\u5c06\u65b0\u5143\u7d20 num \u63d2\u5165\u81f3 B \uff0c\u518d\u5c06 B \u5806\u9876\u5143\u7d20\u63d2\u5165\u81f3 A\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53 m \u2260 n \uff08\u5373N\u4e3a<strong>\u5947\u6570<\/strong>\uff09\uff1a\u9700\u5411 B \u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\u3002\u5b9e\u73b0\u65b9\u6cd5\uff1a\u5c06\u65b0\u5143\u7d20 num \u63d2\u5165\u81f3 A \uff0c\u518d\u5c06 B \u5806\u9876\u5143\u7d20\u63d2\u5165\u81f3 B\uff1b<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u8981\u8ba9\u4e24\u4e2a\u5806\u4fdd\u6301\u5e73\u8861\uff0c\u5373\u5f53N\u4e3a\u5947\u6570\u65f6\uff0c\u4fdd\u5b58\u8f83\u5927\u4e00\u534a\u7684\u5806\u7684\u5143\u7d20\u4e2a\u6570\u6bd4\u4fdd\u5b58\u8f83\u5c0f\u4e00\u534a\u7684\u5806\u7684\u5143\u7d20\u4e2a\u6570\u591a1<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong><span style=\"background-color: #ccffff;\">findMedian()<\/span> \u51fd\u6570\uff1a<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53m == n \uff08\u5373N\u4e3a\u5076\u6570\uff09\uff1a\u5219\u4e2d\u4f4d\u6570\u4e3a\uff08A \u7684\u5806\u9876\u5143\u7d20 + B \u7684\u5806\u9876\u5143\u7d20\uff09\/2\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53 m \u2260 n \uff08\u5373N\u4e3a\u5947\u6570\uff09\uff1a\u5219\u4e2d\u4f4d\u6570\u4e3a A \u7684\u5806\u9876\u5143\u7d20\uff1b<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u590d\u6742\u5ea6\u5206\u6790<\/strong>\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u65f6\u95f4\u590d\u6742\u5ea6<\/strong>\uff1a<\/span>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u67e5\u627e\u4e2d\u4f4d\u6570<\/strong> O(1)\uff1a\u83b7\u53d6\u5806\u9876\u5143\u7d20\u4f7f\u7528 O(1)\u65f6\u95f4\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u6dfb\u52a0\u6570\u5b57<\/strong> O(log N)\uff1a\u5806\u7684\u63d2\u5165\u548c\u5f39\u51fa\u64cd\u4f5c\u4f7f\u7528 O(log N)\u65f6\u95f4\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7a7a\u95f4\u590d\u6742\u5ea6<\/strong> O(N)\uff1a\u5176\u4e2d N \u4e3a\u6570\u636e\u6d41\u4e2d\u7684\u5143\u7d20\u6570\u91cf\uff0c\u5c0f\u9876\u5806 A \u548c\u5927\u9876\u5806 B \u6700\u591a\u540c\u65f6\u4fdd\u5b58 N \u4e2a\u5143\u7d20\u3002<\/span><\/li>\n<\/ul>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0MedianFinder\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0\/**\u00a0initialize\u00a0your\u00a0data\u00a0structure\u00a0here.\u00a0*\/\n\u00a0\u00a0\u00a0\u00a0priority_queue&lt;int>\u00a0min;\/\/\u5927\u9876\u5806\uff0c\u7528\u6765\u5b58\u503c\u5c0f\u7684\u4e00\u534a\n\u00a0\u00a0\u00a0\u00a0priority_queue&lt;int,vector&lt;int>,greater&lt;int>>\u00a0max;\/\/\u5c0f\u9876\u5806\uff0c\u7528\u6765\u5b58\u503c\u5927\u7684\u4e00\u534a\n\u00a0\u00a0\u00a0\u00a0MedianFinder()\u00a0{\n\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0void\u00a0addNum(int\u00a0num)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5f53\u5806\u91cc\u6709\u5947\u6570\u4e2a\u6570\u65f6\uff0c\u6c38\u8fdc\u662fmax\u7684\u6570\u6bd4min\u591a1\u4e2a\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5982\u679c\u5806\u91cc\u6709\u5076\u6570\u4e2a\u6570\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(min.size()==max.size())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5b58\u653e\u8fdbmax\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0min.push(num);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0max.push(min.top());\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0min.pop();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u4e0d\u8981\u76f4\u63a5\u653e\u8fdbmax\u5806\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6392\u5e8f\u9519\u8bef\uff08\u4e07\u4e00num\u5c5e\u4e8emin\u5806\u5462\uff09\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5148\u653e\u8fdbmin\u5806\uff0c\u6392\u597d\u5e8f\u540e\uff0c\u5c06\u961f\u9996\u5143\u7d20\uff08\u4e5f\u5c31\u662f\u6700\u5927\u7684\u5143\u7d20\uff09\u5f39\u51fa\u7ed9max\u5806\uff0c\u4e0b\u540c\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5806\u91cc\u6709\u5947\u6570\u4e2a\u6570\uff0c\u5b58\u653e\u8fdbmin\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0max.push(num);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0min.push(max.top());\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0max.pop();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0double\u00a0findMedian()\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5806\u91cc\u6709\u5076\u6570\u4e2a\u6570\u65f6\uff0c\u5806\u9876\u5143\u7d20\u76f8\u52a0\u9664\u4ee52\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(min.size()==max.size())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0(max.top()+min.top())\/2.0;\/\/\u9664\u6570\u4e3a2.0\u800c\u4e0d\u662f2\uff0c\u8f6c\u6362\u4e3adouble\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5806\u91cc\u6709\u5947\u6570\u4e2a\u6570\u65f6\uff0c\u4e2d\u4f4d\u6570\u4e3amax\u5806\u9876\u5143\u7d20\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0max.top();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989842. \u8fde\u7eed\u5b50\u6570\u7ec4\u7684\u6700\u5927\u548c<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u5165\u4e00\u4e2a\u6574\u578b\u6570\u7ec4\uff0c\u6570\u7ec4\u91cc\u6709\u6b63\u6570\u4e5f\u6709\u8d1f\u6570\u3002\u6570\u7ec4\u4e2d\u7684\u4e00\u4e2a\u6216\u8fde\u7eed\u591a\u4e2a\u6574\u6570\u7ec4\u6210\u4e00\u4e2a\u5b50\u6570\u7ec4\u3002\u6c42\u6240\u6709\u5b50\u6570\u7ec4\u7684\u548c\u7684\u6700\u5927\u503c\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8981\u6c42\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(n)\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_42_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"351\" height=\"207\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_42_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-591\"  sizes=\"auto, (max-width: 351px) 100vw, 351px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u601d\u8def\uff1a\u8fd9\u9053\u9898\u53ef\u4ee5\u7528\u66b4\u529b\u641c\u7d22\u3001\u5206\u6cbb\u548c\u52a8\u6001\u89c4\u5212\u6765\u89e3\uff0c\u5176\u4e2d\u52a8\u6001\u89c4\u5212\u662f\u6700\u4f18\u89e3\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u52a8\u6001\u89c4\u5212\u89e3\u6790\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u72b6\u6001\u5b9a\u4e49<\/strong>\uff1a\u8bbe\u52a8\u6001\u89c4\u5212\u5217\u8868<span style=\"background-color: #ccffff;\"> dp<\/span> \uff0cdp[i] \u4ee3\u8868\u4ee5\u5143\u7d20 nums[i] \u4e3a<strong>\u7ed3\u5c3e<\/strong>\u7684\u8fde\u7eed\u5b50\u6570\u7ec4\u6700\u5927\u548c\u3002<\/span>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e3a\u4f55\u5b9a\u4e49\u6700\u5927\u548c dp[i] \u4e2d\u5fc5\u987b\u5305\u542b\u5143\u7d20 nums[i] \uff1a\u4fdd\u8bc1 dp[i+1] \u7684\u6b63\u786e\u6027\uff1b\u5982\u679c\u4e0d\u5305\u542b nums[i]\uff0c\u9012\u63a8\u65f6\u5219\u4e0d\u6ee1\u8db3\u9898\u76ee\u7684 <strong>\u8fde\u7eed\u5b50\u6570\u7ec4<\/strong> \u8981\u6c42\u3002<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8f6c\u79fb\u65b9\u7a0b<\/strong>\uff1a\u82e5 dp[i-1] \u2264 0 \uff0c\u8bf4\u660e dp[i-1] \u5bf9 dp[i] \u4ea7\u751f\u8d1f\u8d21\u732e\uff0c<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5373 dp[i-1] + nums[i] \u8fd8\u4e0d\u5982 nums[i] \u672c\u8eab\u5927\u3002<\/span>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53 dp[i-1] \uff1e 0 \u65f6\uff1a\u6267\u884cdp[i] = dp[i-1] + nums[i]\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53 dp[i-1] \u2264 0 \u65f6\uff1a\u6267\u884cdp[i] = nums[i]\uff1b<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u521d\u59cb\u72b6\u6001<\/strong>\uff1adp[0] = nums[0] \uff0c\u5373\u4ee5 nums[0] \u7ed3\u5c3e\u7684\u8fde\u7eed\u5b50\u6570\u7ec4\u6700\u5927\u548c\u4e3a nums[0]\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8fd4\u56de\u503c<\/strong>\uff1a\u8fd4\u56de dp \u5217\u8868\u4e2d\u7684\u6700\u5927\u503c\uff0c\u4ee3\u8868\u5168\u5c40\u6700\u5927\u503c\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7528 dp[i] \u8868\u793a\u4ee5 nums[i] \u7ed3\u5c3e\u7684\u6700\u5927\u548c\uff0c\u90a3\u4e48\u53ef\u4ee5\u5f97\u51fa\u9012\u63a8\u8868\u8fbe\u5f0f\uff1a<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">dp[i] = max( dp[i-1] + nums[i]\uff0cnums[i] )<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u56e0\u4e3a\u5982\u679c\u4ee5 nums[i-1] \u7ed3\u5c3e\u7684\u6700\u5927\u548c\u52a0\u4e0a nums[i] \u7684\u503c\u5c0f\u4e8e nums[i] \u7684\u503c\uff0c\u90a3\u4e48\u4ee5 nums[i] \u7ed3\u5c3e\u7684\u6700\u5927\u548c\u80af\u5b9a\u662f num[i]\u4e86\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0maxSubArray(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5b58\u653e\u5f53\u524ddp[i-1]+nums[i]\u548cnums[i]\u7684\u6781\u5927\u503c\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0dp(nums.size(),nums[0]);\/\/\u5148\u7533\u8bf7size\u957f\u5ea6\u7684vector\uff0c\u7b2c\u4e00\u4e2a\u4f4d\u7f6e\u8981\u653enum[0]\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5b58\u653edp\u6570\u7ec4\u7684\u6700\u5927\u503c\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0res=nums[0];\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=1;i&lt;nums.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[i]=max(dp[i-1]+nums[i],nums[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res=max(res,dp[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u822c\u52a8\u6001\u89c4\u5212\u7a7a\u95f4\u590d\u6742\u5ea6\u662f\u53ef\u4ee5\u8fdb\u884c\u4f18\u5316\u7684\uff0c\u6211\u4eec\u8fd9\u4e2a\u4e5f\u662f\u53ef\u4ee5\u4f18\u5316\u7684\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u56e0\u4e3a\u6211\u4eec\u6bcf\u6b21\u5176\u5b9e\u53ea\u7528\u5230\u4e86 dp[i-1] \u53bb\u66f4\u65b0 dp[i] \uff0c\u90a3\u4e48\u6211\u4eec\u76f4\u63a5\u4f7f\u7528\u4e00\u4e2a\u53d8\u91cf\u53bb\u66ff\u6362\u5c31\u597d\u4e86\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0maxSubArray(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0dp=nums[0];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0res=dp;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=1;i&lt;nums.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp=max(dp+nums[i],nums[i]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res=max(res,dp);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989843. 1\uff5en\u6574\u6570\u4e2d1\u51fa\u73b0\u7684\u6b21\u6570<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u5165\u4e00\u4e2a\u6574\u6570 n \uff0c\u6c421\uff5en\u8fd9n\u4e2a\u6574\u6570\u7684\u5341\u8fdb\u5236\u8868\u793a\u4e2d1\u51fa\u73b0\u7684\u6b21\u6570\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4f8b\u5982\uff0c\u8f93\u516512\uff0c1\uff5e12\u8fd9\u4e9b\u6574\u6570\u4e2d\u5305\u542b1 \u7684\u6570\u5b57\u67091\u300110\u300111\u548c12\uff0c1\u4e00\u5171\u51fa\u73b0\u4e865\u6b21\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_43_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"297\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_43_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-595\"\/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def\uff1a<\/strong>\u627e\u89c4\u5f8b<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5047\u8bbe\u6211\u4eec\u5bf95014\u8fd9\u4e2a\u6570\u5b57\u6c42\u89e3\u3002<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e2a\u4f4d\u4e0a1\u51fa\u73b0\u7684\u4e2a\u6570\uff1a\u8bb0\u9ad8\u4f4d\u4e3ahigh=501\uff0c\u5f53\u524d\u4f4d\u4e3acur=4<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u9ad8\u4f4d\u4ece0~500\u53d8\u5316\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e00\u4e2a\u53d8\u5316\u4e2d1\u53ea\u51fa\u73b01\u6b21\uff0c\u5373\uff08\u9ad8\u4f4d1\uff09\u8fd9\u6837\u7684\u6570\u5b57\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9ad8\u4f4d\u662f501\u65f6\uff0c\u56e0\u4e3a\u5f53\u524d\u4f4d\u662f4\uff0c\u6240\u4ee51\u53ea\u80fd\u51fa\u73b0\u4e00\u6b21\uff0c\u53735011\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u603b\u5171\u51fa\u73b0\u7684\u6b21\u6570\u4e3ahigh*1+1=502\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5341\u4f4d1\u51fa\u73b0\u7684\u4e2a\u6570\u662f\uff1a\u8bb0\u9ad8\u4f4dhigh=50\uff0c\u5f53\u524d\u4f4d\u4e3acur=1\uff0c\u4f4e\u4f4d\u4e3alow=4<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u9ad8\u4f4d\u4ece0~49\u53d8\u5316\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e00\u4e2a\u53d8\u5316\u4e2d1\u51fa\u73b010\u6b21\uff0c\u5373\uff08\u9ad8\u4f4d10\uff09~\uff08\u9ad8\u4f4d19\uff09\u8fd9\u6837\u7684\u6570\u5b57\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9ad8\u4f4d\u4e3a50\u7684\u65f6\u5019\uff0c\u56e0\u4e3a\u5f53\u524d\u4f4d\u662f1\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u770b\u4f4e\u4f4d\u6765\u51b3\u5b9a\u51fa\u73b0\u7684\u6b21\u6570\uff0c\u56e0\u4e3a\u4f4e\u4f4d\u4e3a4\uff0c\u6240\u4ee5\u6b64\u65f6\u51fa\u73b05\u6b21\uff0c\u53735010~5014\u8fd9\u6837\u7684\u6570\u5b57\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u603b\u5171\u51fa\u73b0\u7684\u6b21\u6570\u4e3ahigh*10+4=504\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u767e\u4f4d1\u51fa\u73b0\u7684\u4e2a\u6570\uff1a\u8bb0\u9ad8\u4f4dhigh=5\uff0c\u5f53\u524d\u4f4dcur=0\uff0c\u4f4e\u4f4d\u4e3alow=14<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u9ad8\u4f4d\u4ece0~4\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6bcf\u4e00\u4e2a\u53d8\u53161\u51fa\u73b0100\u6b21\uff0c\u5373\uff08\u9ad8\u4f4d100\uff09~\uff08\u9ad8\u4f4d199\uff09\u8fd9\u6837\u7684\u6570\u5b57\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9ad8\u4f4d\u4e3a5\u7684\u65f6\u5019\uff0c\u56e0\u4e3a\u5f53\u524d\u4f4d\u4e3a0\uff0c\u6240\u4ee5\u4e0d\u5b58\u5728\u51fa\u73b01\u7684\u53ef\u80fd\u6027\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u603b\u5171\u51fa\u73b0\u7684\u6b21\u6570\u4e3ahigh*100+0=500\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5343\u4f4d1\u51fa\u73b0\u7684\u6b21\u6570\uff1a\u8bb0\u9ad8\u4f4dhigh=0\uff0c\u5f53\u524d\u4f4dcur=5\uff0c\u4f4e\u4f4dlow=014<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u56e0\u4e3a\u6ca1\u6709\u9ad8\u4f4d\u6240\u4ee5\u76f4\u63a5\u770b\u5f53\u524d\u4f4d\uff0c\u56e0\u4e3a\u5f53\u524d\u4f4d\u4e3a5\uff0c\u6240\u4ee51\u51fa\u73b0\u7684\u6b21\u6570\u4e3a1000\uff0c\u53731000~1999\u8fd9\u6837\u7684\u6570\u5b57\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u603b\u5171\u51fa\u73b0\u7684\u6b21\u6570\u4e3ahigh*1000+1000=1000\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7efc\u4e0a\u6700\u7ec8\u7684\u7ed3\u679c\u5c06\u6bcf\u4e2a\u4f4d\u7f6e\u51fa\u73b0\u76841\u7684\u6b21\u6570\u7d2f\u52a0\u5373\u53ef\u3002<\/span><\/li>\n<\/ul>\n<p><strong>\u7ed3\u8bba<\/strong>\uff1a<\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u5047\u8bbe\u9ad8\u4f4d\u4e3ahigh\uff0c\u5f53\u524d\u4f4d\u4e3acur\uff0c\u4f4e\u4f4d\u4e3alow\uff0ci\u4ee3\u8868\u7740\u9700\u8981\u7edf\u8ba1\u7684\u4f4d\u7f6e\u6570\uff081\u5bf9\u5e94\u4e2a\u4f4d\uff0c10\u5bf9\u5e94\u5341\u4f4d\uff0c100\u5bf9\u5e94\u767e\u4f4d\uff09<br>\u5219\u5bf9\u6bcf\u4e00\u4f4d\u7684\u4e2a\u6570count\u6709\uff1a<br>cur=0\uff0ccount=high*i\uff1b<br>cur=1\uff0ccount=high*i+low+1\uff1b<br>cur&gt;1\uff0ccount=high*i+i\uff1b<br>\u6700\u7ec8\u7d2f\u52a0\u6240\u6709\u4f4d\u7f6e\u4e0a\u7684\u4e2a\u6570\u5373\u6700\u7ec8\u7b54\u6848<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0countDigitOne(int\u00a0n)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0long\u00a0i=1;\/\/\u6307\u5411\u904d\u5386\u7684\u4f4d\u6570i=1\u6307\u5411\u4e2a\u4f4d\uff0ci=10\u6307\u5411\u5341\u4f4d\u2026\u2026\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0count=0;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0long\u00a0high=n\/10,cur=n%10,low=0;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while(high\u00a0!=0\u00a0||\u00a0cur\u00a0!=0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(cur==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0count\u00a0+=\u00a0high\u00a0*\u00a0i;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0if(cur==1)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0count\u00a0+=\u00a0high\u00a0*\u00a0i\u00a0+\u00a0low\u00a0+\u00a01;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0count\u00a0+=\u00a0high\u00a0*\u00a0i\u00a0+\u00a0i;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0low\u00a0+=\u00a0cur\u00a0*\u00a0i;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cur\u00a0=\u00a0high\u00a0%\u00a010;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0high\u00a0\/=\u00a010;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0i\u00a0*=\u00a010;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0count;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989844. \u6570\u5b57\u5e8f\u5217\u4e2d\u67d0\u4e00\u4f4d\u7684\u6570\u5b57<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6570\u5b57\u4ee50123456789101112131415\u2026\u7684\u683c\u5f0f\u5e8f\u5217\u5316\u5230\u4e00\u4e2a\u5b57\u7b26\u5e8f\u5217\u4e2d\u3002\u5728\u8fd9\u4e2a\u5e8f\u5217\u4e2d\uff0c\u7b2c5\u4f4d\uff08\u4ece\u4e0b\u68070\u5f00\u59cb\u8ba1\u6570\uff09\u662f5\uff0c\u7b2c13\u4f4d\u662f1\uff0c\u7b2c19\u4f4d\u662f4\uff0c\u7b49\u7b49\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8bf7\u5199\u4e00\u4e2a\u51fd\u6570\uff0c\u6c42\u4efb\u610f\u7b2cn\u4f4d\u5bf9\u5e94\u7684\u6570\u5b57\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_44_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"161\" height=\"295\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_44_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-599\"\/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u627e\u89c4\u5f8b<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u901a\u8fc7\u89c2\u5bdf\uff0c\u53ef\u4ee5\u53d1\u73b0\u4ee5\u4e0b\u89c4\u5f8b\uff1a<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_44_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"583\" height=\"143\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_44_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-601\"  sizes=\"auto, (max-width: 583px) 100vw, 583px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5bf9\u4e8e\u7b2c n \u4f4d\u5bf9\u5e94\u7684\u6570\u5b57\uff0c\u6211\u4eec\u4ee4\u8fd9\u4e2a\u6570\u5b57\u5bf9\u5e94\u7684\u6570\u4e3a<span style=\"background-color: #ccffff;\"> target<\/span> \uff0c\u7136\u540e\u5206\u4e09\u6b65\u8fdb\u884c\u3002<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9996\u5148\u627e\u5230\u8fd9\u4e2a\u6570\u5b57\u5bf9\u5e94\u7684\u6570\u662f\u51e0\u4f4d\u6570\uff0c\u7528<span style=\"background-color: #ccffff;\"> dig<\/span> \u8868\u793a\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7136\u540e\u786e\u5b9a\u8fd9\u4e2a\u5bf9\u5e94\u7684\u6570\u7684\u6570\u503c<span style=\"background-color: #ccffff;\"> target<\/span> \uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6700\u540e\u786e\u5b9a\u8fd4\u56de\u503c\u662f<span style=\"background-color: #ccffff;\"> target<\/span> \u4e2d\u7684\u54ea\u4e2a\u6570\u5b57\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e3e\u4e2a\u6817\u5b50\uff1a<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6bd4\u5982\u8f93\u5165\u7684 n \u662f<span style=\"background-color: #ccffff;\"> 365<\/span> \uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7ecf\u8fc7\u7b2c\u4e00\u6b65\u8ba1\u7b97\u6211\u4eec\u53ef\u4ee5\u5f97\u5230\u7b2c365\u4e2a\u6570\u5b57\u8868\u793a\u7684\u6570\u662f\u4e09\u4f4d\u6570\uff0c<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">n = 365 &#8211; 9 &#8211; 90 \u00d7 2 = 176\uff0c<span style=\"background-color: #ccffff;\">dig = 3<\/span> \u3002\u8fd9\u65f6 n = 176 \u8868\u793a\u76ee\u6807\u6570\u5b57\u662f\u4e09\u4f4d\u6570\u4e2d\u7684\u7b2c176\u4e2a\u6570\u5b57\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u8bbe\u76ee\u6807\u6570\u5b57\u6240\u5728\u7684\u6570\u4e3a<span style=\"background-color: #ccffff;\"> number<\/span> \uff0c\u8ba1\u7b97\u5f97\u5230<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">number = 100 + 176 \/ 3 =158 \uff0c<span style=\"background-color: #ccffff;\">idx<\/span> \u662f\u76ee\u6807\u6570\u5b57\u5728<span style=\"background-color: #ccffff;\"> number<\/span> \u4e2d\u7684\u7d22\u5f15\uff0c\u5982\u679c<span style=\"background-color: #ccffff;\"> idx = 0<\/span> \uff0c\u8868\u793a\u76ee\u6807\u6570\u5b57\u662f<span style=\"background-color: #ccffff;\"> number<\/span> \u4e2d\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6839\u636e\u4e0a\u4e00\u6b65\u9aa4\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba1\u7b97\u5f97\u5230<span style=\"background-color: #ccffff;\"> idx = n % dig = 176 % 3 = 2<\/span>\uff0c\u8bf4\u660e\u76ee\u6807\u6570\u5b57\u5e94\u8be5\u662f<span style=\"background-color: #ccffff;\"> number = 158<\/span> \u4e2d\u7684\u7b2c\u4e8c\u4e2a\u6570\u5b57\uff0c\u5373\u8f93\u51fa\u4e3a<span style=\"background-color: #ccffff;\"> 5<\/span> \u3002<\/span><\/li>\n<\/ul>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0findNthDigit(int\u00a0n)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(n&lt;=9)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0n;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n-=9;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0long\u00a0long\u00a0count=90,dig=2;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u8ba1\u7b97\u6570\u4f4d\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while(n>count*dig)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0n-=count*dig;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0count*=10;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dig++;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5bfb\u627e\u5bf9\u5e94\u7684\u90a3\u4e2a\u6570\u5b57\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0long\u00a0long\u00a0num=pow(10,dig-1)+n\/dig;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5982\u679c\u521a\u597d\u8fd9\u4e2a\u6570\u5b57\u662f\u5728\u6700\u540e\u4e00\u4f4d\u90a3\u5c31\u662f\u4e0a\u4e00\u4e2a\u6570\u5b57\u7684\u6700\u540e\u4e00\u4f4d\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u4f8b\u5982n=11\uff0c\u8ba1\u7b97\u51fa\u6765\u6309\u9053\u7406\u662f11\uff0c\u5176\u5b9e\u5bf9\u5e94\u7684\u662f10\u76840\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(n%dig==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0num--;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0num%10;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5982\u679c\u662f\u8fd9\u4e2a\u6570\u7684\u7b2c\u4e8c\u4f4d\uff0c\u4f8b\u59827888\uff0c\u90a3\u4e48\u5e94\u8be5\u662f78\/100%10\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;(dig-n%dig);++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0num\/=10;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0num%10;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989845. \u628a\u6570\u7ec4\u6392\u6210\u6700\u5c0f\u7684\u6570<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u5165\u4e00\u4e2a\u6b63\u6574\u6570\u6570\u7ec4\uff0c\u628a\u6570\u7ec4\u91cc\u6240\u6709\u6570\u5b57\u62fc\u63a5\u8d77\u6765\u6392\u6210\u4e00\u4e2a\u6570\uff0c\u6253\u5370\u80fd\u62fc\u63a5\u51fa\u7684\u6240\u6709\u6570\u5b57\u4e2d\u6700\u5c0f\u7684\u4e00\u4e2a\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_45_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"218\" height=\"286\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_45_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-604\"\/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8bf4\u660e\uff1a<\/strong><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u51fa\u7ed3\u679c\u53ef\u80fd\u975e\u5e38\u5927\uff0c\u6240\u4ee5\u4f60\u9700\u8981\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u800c\u4e0d\u662f\u6574\u6570<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u62fc\u63a5\u8d77\u6765\u7684\u6570\u5b57\u53ef\u80fd\u4f1a\u6709\u524d\u5bfc0\uff0c\u6700\u540e\u7ed3\u679c\u4e0d\u9700\u8981\u53bb\u6389\u524d\u5bfc0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u5148\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u518d\u7ec4\u5408\uff08\u6392\u5e8f\uff09<br>\u8fd9\u9053\u9898\u672c\u8d28\u4e0a\u662f\u4e00\u9053\u6392\u5e8f\u9898\uff0c\u53ea\u662f\u6392\u5e8f\u89c4\u5219\u4e0e\u5e38\u89c1\u7684\u5347\u5e8f\u7565\u6709\u53d8\u5316\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u9996\u5148\u6211\u4eec\u8981\u660e\u767d\u7684\u662f\uff1a\u65e0\u8bba\u8fd9\u4e9b\u6570\u5b57\u600e\u4e48\u53d6\u6392\u5217\uff0c\u5f62\u6210\u7684\u6570\u5b57\u7684\u4f4d\u6570\u662f\u4e0d\u53d8\u7684<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u5c31\u662f\u9ad8\u4f4d\u7684\u6570\u5b57\u80af\u5b9a\u8d8a\u5c0f\u8d8a\u597d\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u5148\u8003\u8651\u4e00\u4e0b\u600e\u4e48\u6392\u5217\u4e24\u4e2a\u6570\u5b57\uff0c\u6bd4\u59821\u548c20\uff0c\u9ad8\u4f4d\u8d8a\u5c0f\u8d8a\u597d\uff0c\u653e1\uff0c\u7ec4\u5408\u6210120\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u518d\u770b\u4e00\u4e0b\u4e09\u4e2a\u6570\u7684\u60c5\u51b5\uff0c\u6bd4\u598236\u300138\u548c5\uff0c\u9996\u5148\u80af\u5b9a\u5148\u653e36\uff0c\u5269\u4e0b38\u548c5\uff0c\u7136\u540e\u5bf9\u8fd9\u4e24\u4e2a\u6570\u8fdb\u884c\u6392\u5217\uff0c385\uff0c<\/span><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u6700\u540e\u7684\u7ed3\u679c\u4e3a36385\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7531\u4e0a\u9762\u7684\u4e24\u4e2a\u4f8b\u5b50\u6211\u4eec\u5176\u5b9e\u5c31\u53ef\u4ee5\u77e5\u9053\uff0c\u653e\u6570\u5b57\u7684\u987a\u5e8f\u80af\u5b9a\u662f\u5148\u653e\u7b2c\u4e00\u4f4d\uff08\u6700\u5de6\u8fb9\u4e00\u4f4d\uff09\u6700\u5c0f\u7684\u5143\u7d20\uff0c\u5982\u679c\u7b2c\u4e00\u4f4d\u76f8\u7b49\uff0c\u6bd4\u8f83\u7b2c\u4e8c\u4f4d\u2026\u2026\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u518d\u601d\u8003\u4e00\u4e0b\uff0c36 &lt; 38 &gt; 5\uff0c\u4f46\u662f\u201c36\u201d&lt;\u201c38\u201d&lt;\u201c5\u201d\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e5f\u5c31\u662f\u6211\u4eec\u5982\u679c\u628a\u6240\u6709\u6570\u5b57\u8f6c<strong>\u6362\u6210\u5b57\u7b26\u4e32\u518d\u6392\u5217<\/strong>\uff0c\u521a\u597d\u5c31\u662f\u6211\u4eec\u5e0c\u671b\u7684\u60c5\u51b5\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u6ce8\u610f<\/strong>\uff1a\u6211\u4eec\u8fd9\u91cc\u8bf4\u7684\u6392\u5217\u5927\u5c0f\u6bd4\u8f83\u548c\u5b57\u7b26\u4e32\u5927\u5c0f\u6709\u70b9\u533a\u522b\uff0c\u6bd4\u59823\u548c30\uff0c\u660e\u663e30\u6392\u5728\u524d\u9762\u6bd4\u8f83\u597d\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u91cd\u6784\u6bd4\u8f83\uff0c\u6211\u4eec\u7ec4\u5408s1\u548cs2\uff0c\u5982\u679cs1+s2 &lt; s2+s1\uff0c\u90a3\u4e48s1 &lt; s2<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u81f3\u6b64\uff0c\u6211\u4eec\u5df2\u7ecf\u5206\u6790\u51fa\u6765\u4e86\uff1a<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0string\u00a0minNumber(vector&lt;int>&amp;\u00a0nums)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;string>\u00a0str;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0string\u00a0res;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;nums.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0str.push_back(to_string(nums[i]));\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sort(str.begin(),str.end(),cmp);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;str.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res+=str[i];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0static\u00a0bool\u00a0cmp(string\u00a0&amp;s1,string\u00a0&amp;s2)\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0s1+s2&lt;s2+s1;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989846. \u628a\u6570\u5b57\u7ffb\u8bd1\u6210\u5b57\u7b26\u4e32<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7ed9\u5b9a\u4e00\u4e2a\u6570\u5b57\uff0c\u6211\u4eec\u6309\u7167\u5982\u4e0b\u89c4\u5219\u628a\u5b83\u7ffb\u8bd1\u4e3a\u5b57\u7b26\u4e32\uff1a0 \u7ffb\u8bd1\u6210 \u201ca\u201d \uff0c1 \u7ffb\u8bd1\u6210 \u201cb\u201d\uff0c\u2026\u2026\uff0c11 \u7ffb\u8bd1\u6210 \u201cl\u201d\uff0c\u2026\u2026\uff0c25 \u7ffb\u8bd1\u6210 \u201cz\u201d\u3002\u4e00\u4e2a\u6570\u5b57\u53ef\u80fd\u6709\u591a\u4e2a\u7ffb\u8bd1\u3002\u8bf7\u7f16\u7a0b\u5b9e\u73b0\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u6765\u8ba1\u7b97\u4e00\u4e2a\u6570\u5b57\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u7ffb\u8bd1\u65b9\u6cd5\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_46_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"397\" height=\"213\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_46_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-606\"  sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u52a8\u6001\u89c4\u5212<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u548c\u9752\u86d9\u8df3\u53f0\u9636\u7684\u601d\u8def\u5f88\u50cf<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8df3\u53f0\u9636\u8fd9\u9053\u9898\uff1a\u8df3\u53f0\u9636\u65f6\u6bcf\u6b21\u53ef\u4ee5\u8df3\u4e00\u5c42\u6216\u4e24\u5c42\uff0c\u6c42\u6709\u591a\u5c11\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u5230\u8fbe\u7ec8\u70b9\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u800c\u8fd9\u9053\u9898\u6362\u6210\u4e86\uff0c\u6bcf\u6b21\u53ef\u4ee5\u9009\u62e9\u4e00\u4e2a\u6570\u5b57\u6216\u4e24\u4e2a\u6570\u5b57\uff0c\u7528\u6765\u5408\u5e76\u6210\u4e00\u4e2a\u5b57\u7b26\uff0c\u6c42\u53ef\u4ee5\u5408\u6210\u591a\u5c11\u79cd\u5b57\u7b26\u4e32\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u9053\u9898\u7684\u72b6\u6001\u8f6c\u79fb\u65b9\u7a0b\u4e3a\uff1a<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_46_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"534\" height=\"58\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_46_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-608\"  sizes=\"auto, (max-width: 534px) 100vw, 534px\" \/><\/div><\/figure>\n\n\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">num[i]\u548cnum[i-1]\u4e0d\u80fd\u5408\u6210\u4e00\u4e2a\u5b57\u7b26\uff0c\u5373\u53ea\u80fd\u7ffb\u8bd1\u4e00\u4e2a\u6570\u5b57\u65f6\uff0c\u7ffb\u8bd1\u65b9\u6cd5\u7684\u603b\u6570\u4e0d\u4f1a\u589e\u52a0\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">num[i]\u548cnum[i-1]\u80fd\u5408\u6210\u4e00\u4e2a\u5b57\u7b26\uff0c\u5373\u65e2\u80fd\u7ffb\u8bd1\u4e00\u4e2a\u6570\u5b57\uff0c\u53c8\u53ef\u4ee5\u4e24\u4e2a\u6570\u5b57\u7ec4\u5408\u540e\u7ffb\u8bd1\uff0c\u90a3\u4e48\u7ffb\u8bd1\u65b9\u6cd5\u7684\u603b\u6570\u4f1a\u589e\u52a0\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u90a3\u4e48\u4ec0\u4e48\u65f6\u5019\u53ea\u80fd\u7ffb\u8bd1\u4e00\u4e2a\u6570\u5b57\u5462\uff1f<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53\u78b0\u5230\u6570\u5b57\u20180\u2019\u65f6\uff0c\u4e0d\u80fd\u4e0e\u540e\u9762\u7684\u6570\u5b57\u7ec4\u5408\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53\u7ec4\u5408\u540e\u6570\u5b57\u5927\u4e8e\u201c25\u201d\u65f6\uff0c\u8d85\u51fa\u4e86\u5b57\u6bcd\u603b\u6570\u3002<\/span><\/li>\n<\/ul>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0translateNum(int\u00a0num)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0string\u00a0str=to_string(num);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/num\u6700\u5927\u662f2^31\uff0c\u6700\u957f\u4e0d\u4f1a\u8d85\u8fc711\u4f4d\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0dp[11];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[0]=1;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[1]=1;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=1;i&lt;str.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/if\u6210\u7acb\uff0c\u8bf4\u660e\u53ea\u80fd\u7ffb\u8bd11\u4f4d\u6570\u5b57\uff1a0\u5f00\u5934\uff1b\u5927\u4e8e25\u7684\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(str[i-1]=='0'\u00a0||\u00a0str.substr(i-1,2)>\"25\")\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[i+1]=dp[i];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\/\/\u53ef\u4ee5\u7ffb\u8bd12\u4f4d\u6570\u5b57\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[i+1]=dp[i]+dp[i-1];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\u662f\u7b54\u6848\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0dp[str.size()];\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; color: #000000; font-size: 24pt;\">\u9762\u8bd5\u989847. \u793c\u7269\u7684\u6700\u5927\u4ef7\u503c<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u4e00\u4e2a m*n \u7684\u68cb\u76d8\u7684\u6bcf\u4e00\u683c\u90fd\u653e\u6709\u4e00\u4e2a\u793c\u7269\uff0c\u6bcf\u4e2a\u793c\u7269\u90fd\u6709\u4e00\u5b9a\u7684\u4ef7\u503c\uff08\u4ef7\u503c\u5927\u4e8e 0\uff09\u3002\u4f60\u53ef\u4ee5\u4ece\u68cb\u76d8\u7684\u5de6\u4e0a\u89d2\u5f00\u59cb\u62ff\u683c\u5b50\u91cc\u7684\u793c\u7269\uff0c\u5e76\u6bcf\u6b21\u5411\u53f3\u6216\u8005\u5411\u4e0b\u79fb\u52a8\u4e00\u683c\u3001\u76f4\u5230\u5230\u8fbe\u68cb\u76d8\u7684\u53f3\u4e0b\u89d2\u3002\u7ed9\u5b9a\u4e00\u4e2a\u68cb\u76d8\u53ca\u5176\u4e0a\u9762\u7684\u793c\u7269\u7684\u4ef7\u503c\uff0c\u8bf7\u8ba1\u7b97\u4f60\u6700\u591a\u80fd\u62ff\u5230\u591a\u5c11\u4ef7\u503c\u7684\u793c\u7269\uff1f<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_47_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"341\" height=\"323\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_47_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-611\"  sizes=\"auto, (max-width: 341px) 100vw, 341px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u52a8\u6001\u89c4\u5212\uff0c\u7528DFS\u7684\u8bdd\u4f1a\u8d85\u65f6<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8bbef\uff08i\uff0cj\uff09\u4e3a\u4ece\u68cb\u76d8\u5de6\u4e0a\u89d2\u8d70\u81f3\u5355\u5143\u683c\uff08i\uff0cj\uff09\u7684\u793c\u7269\u6700\u5927\u7d2f\u8ba1\u4ef7\u503c\uff0c\u6613\u5f97\u5230\u4ee5\u4e0b\u9012\u63a8\u5173\u7cfb\uff1af\uff08i\uff0cj\uff09\u7b49\u4e8ef\uff08i\uff0cj-1\uff09\u548cf\uff08i-1\uff0cj\uff09\u4e2d\u7684\u8f83\u5927\u503c\u52a0\u4e0a\u5f53\u524d\u5355\u5143\u683c\u793c\u7269\u4ef7\u503cgrid\uff08i\uff0cj\uff09<br>f\uff08i\uff0cj\uff09=max[f\uff08i\uff0cj-1\uff09\uff0cf\uff08i-1\uff0cj\uff09]+grid\uff08i\uff0cj\uff09<br>\u56e0\u6b64\uff0c\u53ef\u7528\u52a8\u6001\u89c4\u5212\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u4ee5\u4e0a\u516c\u5f0f\u4fbf\u4e3a\u8f6c\u79fb\u65b9\u7a0b<br><\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u72b6\u6001\u5b9a\u4e49<\/strong>\uff1a\u8bbe\u52a8\u6001\u89c4\u5212\u77e9\u9635dp\uff0cdp\uff08i\uff0cj\uff09\u4ee3\u8868\u4ece\u68cb\u76d8\u7684\u5de6\u4e0a\u89d2\u5f00\u59cb\uff0c\u5230\u8fbe\u5355\u5143\u683c\uff08i\uff0cj\uff09\u65f6\u80fd\u62ff\u5230\u793c\u7269\u7684\u6700\u5927\u7d2f\u8ba1\u4ef7\u503c<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8f6c\u79fb\u65b9<span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7a0b<\/span><\/strong>\uff1a<\/span>\n<ul>\n<li>\u5f53 i = 0 \u4e14 j = 0 \u65f6\uff0c\u4e3a\u8d77\u59cb\u5143\u7d20<\/li>\n<li>\u5f53 i = 0 \u4e14 j \u2260 0 \u65f6\uff0c\u4e3a\u77e9\u9635\u7b2c\u4e00\u884c\u5143\u7d20\uff0c\u53ea\u53ef\u4ece\u5de6\u8fb9\u5230\u8fbe<\/li>\n<li>\u5f53 i \u2260 0 \u4e14 j = 0 \u65f6\uff0c\u4e3a\u77e9\u9635\u7b2c\u4e00\u5217\u5143\u7d20\uff0c\u53ea\u53ef\u4ece\u4e0a\u8fb9\u5230\u8fbe<\/li>\n<li>\u5f53 i \u2260 0 \u4e14 j \u2260 0 \u65f6\uff0c\u53ef\u4ece\u5de6\u8fb9\u6216\u4e0a\u8fb9\u5230\u8fbe<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_47_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"93\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_47_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-614\"  sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/div><\/figure>\n\n\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u521d\u59cb\u72b6\u6001<\/strong>\uff1adp[0][0] = grid[0][0]\uff0c\u5373\u5230\u8fbe\u5355\u5143\u683c\uff080\uff0c0\uff09\u65f6\u80fd\u62ff\u5230\u793c\u7269\u7684\u6700\u5927\u7d2f\u8ba1\u4ef7\u503c\u4e3a grid[0][0]\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u8fd4\u56de\u503c<\/strong>\uff1adp[row-1][column-1]\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u7a7a\u95f4\u590d\u6742\u5ea6\u4f18\u5316<\/strong>\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7531\u4e8e dp[i][j] \u53ea\u4e0e dp[i-1][j] \uff0cdp[i][j-1] \uff0cgrid[i][j] \u6709\u5173\u7cfb\uff0c\u56e0\u6b64\u53ef\u4ee5\u5c06\u539f\u77e9\u9635 grid \u7528\u4f5c dp\u77e9\u9635\uff0c\u5373\u76f4\u63a5\u5728 grid \u4e0a\u4fee\u6539\u5373\u53ef\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5e94\u7528\u6b64\u65b9\u6cd5\u53ef\u7701\u53bb dp\u77e9\u9635 \u4f7f\u7528\u7684\u989d\u5916\u7a7a\u95f4\uff0c\u56e0\u6b64\u7a7a\u95f4\u590d\u6742\u5ea6\u4eceMN\u964d\u81f31\u3002<\/span><\/li>\n<\/ul>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0maxValue(vector&lt;vector&lt;int>>&amp;\u00a0grid)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0row=grid.size();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0column=grid[0].size();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;row;++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0j=0;j&lt;column;++j)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(i==0\u00a0&amp;&amp;\u00a0j==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0continue;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0if(i==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0grid[i][j]+=grid[i][j-1];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0if(j==0)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0grid[i][j]+=grid[i-1][j];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0grid[i][j]+=max(grid[i-1][j],grid[i][j-1]);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0grid[row-1][column-1];\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6ce8\uff1a\u52a8\u6001\u89c4\u5212\u76f4\u63a5\u904d\u5386\u77e9\u9635\uff0c\u65e0\u987b\u8003\u8651\u77e9\u9635\u8d8a\u754c\u95ee\u9898\uff0c\u8fd9\u70b9\u4e0eDFS\u4e0d\u540c\u3002<\/span><\/p>\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989848. \u6700\u957f\u4e0d\u542b\u91cd\u590d\u5b57\u7b26\u7684\u5b50\u5b57\u7b26\u4e32<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8bf7\u4ece\u5b57\u7b26\u4e32\u4e2d\u627e\u51fa\u4e00\u4e2a\u6700\u957f\u7684\u4e0d\u5305\u542b\u91cd\u590d\u5b57\u7b26\u7684\u5b50\u5b57\u7b26\u4e32\uff0c\u8ba1\u7b97\u8be5\u6700\u957f\u5b50\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_48_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"432\" height=\"501\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_48_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-618\"  sizes=\"auto, (max-width: 432px) 100vw, 432px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u6ed1\u52a8\u7a97\u53e3\uff08\u53cc\u6307\u9488\uff09<br>\u9898\u76ee\u8981\u6c42\u7b54\u6848\u5fc5\u987b\u662f<strong>\u5b57\u4e32<\/strong>\u7684\u957f\u5ea6\uff0c\u610f\u5473\u7740\u5b57\u4e32\u5185\u7684\u5b57\u7b26\u5728\u539f\u5b57\u7b26\u4e32\u4e2d\u4e00\u5b9a\u662f\u8fde\u7eed\u7684\u3002\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5c06\u7b54\u6848\u770b\u4f5c\u539f\u5b57\u7b26\u4e32\u7684\u4e00\u4e2a\u6ed1\u52a8\u7a97\u53e3\uff0c\u5e76\u7ef4\u62a4\u7a97\u53e3\u5185\u4e0d\u80fd\u6709\u91cd\u590d\u5b57\u7b26\uff0c<strong>\u540c\u65f6\u66f4\u65b0\u7a97\u53e3\u7684\u6700\u5927\u503c<\/strong>\u3002<br><\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_48_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"369\" height=\"105\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_48_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-620\"  sizes=\"auto, (max-width: 369px) 100vw, 369px\" \/><\/div><\/figure>\n\n\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u521d\u59cb\u5316\u5934\u5c3e\u6307\u9488 head\uff0ctail\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">tail\u6307\u9488\u53f3\u79fb\uff0c\u5224\u65adtail\u6307\u5411\u7684\u5143\u7d20\u662f\u5426\u5728 [head\uff1atail] \u7684\u7a97\u53e3\u5185\u3002<\/span>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u7a97\u53e3\u4e2d\u6ca1\u6709\u8be5\u5143\u7d20\uff0c\u5219\u5c06\u8be5\u5143\u7d20\u52a0\u5165\u7a97\u53e3\uff0c\u540c\u65f6\u66f4\u65b0\u7a97\u53e3\u957f\u5ea6<strong>\u6700\u5927\u503c<\/strong>\uff0ctail\u6307\u9488\u7ee7\u7eed\u53f3\u79fb\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u7a97\u53e3\u4e2d\u5b58\u5728\u8be5\u5143\u7d20\uff0c\u5219\u5c06head\u6307\u9488\u53f3\u79fb\uff0c\u76f4\u5230\u7a97\u53e3\u4e2d\u4e0d\u5305\u542b\u8be5\u5143\u7d20<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd4\u56de\u7a97\u53e3\u957f\u5ea6\u7684\u6700\u5927\u503c<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u65f6\u95f4\u590d\u6742\u5ea6\u4e3an^2\uff0c\u5728\u5224\u65adtail\u6307\u5411\u7684\u5143\u7d20\u662f\u5426\u5728\u7a97\u53e3\u5185\u65f6\u91cd\u590d\u904d\u5386\u4e86\u5b57\u7b26\u4e32<\/span><br \/><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u7528<strong>\u54c8\u5e0c\u8868<\/strong>\u6765\u4f18\u5316\u6ed1\u52a8\u7a97\u53e3\u7684\u65f6\u95f4\u5f00\u9500\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4f7f\u7528\u54c8\u5e0c\u8868<strong>\u8bb0\u5f55\u6bcf\u4e2a\u5b57\u7b26\u7684\u4e0b\u4e00\u4e2a\u7d22\u5f15<\/strong>\uff0c\u7136\u540e\u5c3d\u91cf\u5411\u53f3\u79fb\u52a8\u5c3e\u6307\u9488\u6765\u6269\u5c55\u7a97\u53e3\uff0c\u5e76\u66f4\u65b0\u7a97\u53e3\u7684\u6700\u5927\u957f\u5ea6\u3002\u5982\u679c\u5c3e\u6307\u9488\u6307\u5411\u7684\u5143\u7d20\u91cd\u590d\uff0c\u5219\u5c06\u5934\u6307\u9488\u76f4\u63a5\u79fb\u52a8\u5230\u7a97\u53e3\u4e2d\u91cd\u590d\u5143\u7d20\u7684\u53f3\u4fa7\u3002<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">tail\u6307\u9488\u5411\u672b\u5c3e\u65b9\u5411\u79fb\u52a8<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u5c3e\u6307\u9488\u6307\u5411\u7684\u5143\u7d20\u5b58\u5728\u4e8e\u54c8\u5e0c\u8868\u4e2d<\/span>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">head\u6307\u9488\u8df3\u8dc3\u5230\u91cd\u590d\u5b57\u7b26\u7684\u4e0b\u4e00\u4f4d<\/span><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u66f4\u65b0\u54c8\u5e0c\u8868\u548c\u7a97\u53e3\u957f\u5ea6<\/span><\/li>\n<\/ul>\n\n\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0lengthOfLongestSubstring(string\u00a0s)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/0\u4e2a\u5b57\u7b26\u548c1\u4e2a\u5b57\u7b26\u65f6\u76f4\u63a5\u8fd4\u56de\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(s.size()&lt;=1)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0s.size();\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0head=0,res=0;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unordered_map&lt;char,int>\u00a0m;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0tail=0;tail&lt;s.size();++tail)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u67e5\u627es[tail]\uff0c\u82e5\u6ca1\u627e\u5230\u5219\u8fd4\u56deend()\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u82e5if\u6210\u7acb\uff0c\u5219\u8868\u793a\u627e\u5230\u4e86\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(m.find(s[tail])\u00a0!=\u00a0m.end())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0head=max(m[s[tail]],head);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u4fee\u6539\u5b57\u7b26\u7684\u6620\u5c04\u503c\u4e3a\u5b57\u7b26\u7d22\u5f15\u503c+1\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0m[s[tail]]\u00a0=\u00a0tail+1;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u4fee\u6539\u6ed1\u52a8\u7a97\u53e3\u7684\u6700\u5927\u957f\u5ea6\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0res=max(res,tail-head+1);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0res;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5bf9 head=max(m[s[tail]],head); \u7684\u89e3\u91ca\uff1a<br>\u4e3a\u4ec0\u4e48\u5728\u54c8\u5e0c\u8868\u4e2d\u627e\u5230\u91cd\u590d\u7684\u5b57\u7b26\u540e\u4e0d\u76f4\u63a5\u79fb\u52a8head\u6307\u9488\uff0c\u800c\u662f\u8981\u548chead\u6307\u9488\u7d22\u5f15\u6bd4\u8f83\u4e00\u4e0b\uff0c\u5f53\u5b57\u7b26\u7d22\u5f15\u503c\u5927\u4e8ehead\u7d22\u5f15\u540e\u624d\u79fb\u52a8\u5462\uff1f<br><\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u56e0\u4e3a\u54c8\u5e0c\u8868\u91cc\u7684\u5b57\u7b26\u7684\u7d22\u5f15\u4f1a\u8fc7\u671f\uff0c\u5373\u7d22\u5f15\u53ef\u80fd\u4e0d\u5728\u6ed1\u52a8\u7a97\u53e3\u5185\uff1a<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u50cf\u201cedabcaedf\u201d\u8fd9\u6837\u7684\u5b57\u7b26\u4e32\uff0c\u5f53\u53d1\u73b0\u2018a\u2019\u91cd\u590d\u65f6\uff0c\u5934\u6307\u9488\u8981\u8df3\u5230\u7b2c1\u4e2a\u2018a\u2019\u4e4b\u540e\u7684\u2018b\u2019\uff0c\u800c\u7b2c1\u4e2a\u2018a\u2019\u4e4b\u524d\u7684\u2018e\u2019\u3001&#8217;d&#8217;\u7684\u4e0b\u4e00\u4e2a\u7d22\u5f15\u8fd8\u4fdd\u5b58\u5728\u54c8\u5e0c\u8868\u4e2d\uff0c\u4e14\u5b83\u4eec\u7684\u7d22\u5f15\u5728head\u6307\u9488\u7684\u5de6\u4fa7\u3002\u5f53\u5c3e\u6307\u9488\u6307\u5411\u7b2c\u4e8c\u4e2a\u2018a\u2019\u540e\u9762\u7684\u2018e\u2019\u65f6\uff0c\u4f1a\u8ba4\u4e3a\u6709\u91cd\u590d\uff0c\u800c\u6b64\u65f6\u2018e\u2019\u7684\u7d22\u5f15\u8fd8\u662f1\uff0c\u6307\u5411\u7b2c\u4e00\u4e2a\u2018d\u2019\uff0c\u82e5\u76f4\u63a5\u66f4\u6539head\u6307\u9488\uff0c\u90a3\u4e48\u53c8\u6539\u56de\u53bb\u4e86\uff0c\u56e0\u6b64\u8981\u52a0\u4e2amax\u5224\u65ad\u3002\u63a5\u7740\u66f4\u65b0\u2018e\u2019\u7684\u4e0b\u4e00\u4e2a\u7d22\u5f15\u3002<\/span><\/p>\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989849. \u4e11\u6570<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u628a\u53ea\u5305\u542b\u56e0\u5b50 2\u30013 \u548c 5 \u7684\u6570\u79f0\u4f5c\u4e11\u6570\uff08Ugly Number\uff09\u3002\u6c42\u6309\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u7684\u7b2c n \u4e2a\u4e11\u6570\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_49_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"416\" height=\"198\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_49_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-635\"  sizes=\"auto, (max-width: 416px) 100vw, 416px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e00\u4e2a\u6570\u53ef\u4ee5\u5206\u89e3\u6210\u591a\u4e2a\u56e0\u5b50\u76f8\u4e58\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u59826\u53ef\u4ee5\u5206\u89e3\u4e3a3*2\uff0c3\u548c2\u5c31\u662f6\u7684\u56e0\u5b50\uff1b<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">12\u53ef\u4ee5\u5206\u89e3\u4e3a2*6\u62163*4\uff0c\u8fdb\u800c\u518d\u5206\u89e3\u4e3a2*2*3\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6211\u4eec\u628a\u53ea\u5305\u542b\u56e0\u5b502\u30013\u548c5\u7684\u6570\u79f0\u4e3a\u201c\u4e11\u6570\u201d\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7279\u6b8a\uff1a1\u662f\u4e11\u6570\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u9053\u9898\u8ba9\u6211\u4eec\u6309\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u8f93\u51fa\u7b2cn\u4e2a\u4e11\u6570<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u601d\u8def\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e11\u6570\u53ef\u4ee5\u5206\u89e3\u4e3a2\u30013\u30015\u56e0\u5b50\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u53cd\u8fc7\u6765\u75282\u30013\u30015\u6765\u6784\u9020\u4e11\u6570\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7533\u8bf7<span style=\"background-color: #ccffff;\"> \u6570\u7ec4dp<\/span> \uff0cdp\u6570\u7ec4\u6309\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u5b58\u653e\u4e11\u6570\uff0c\u7b2c\u4e00\u4f4d<span style=\"background-color: #ccffff;\"> dp[0]=1<\/span>\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7533\u8bf7\u4e09\u4e2a\u6307\u9488<span style=\"background-color: #ccffff;\"> p2<\/span> \u3001<span style=\"background-color: #ccffff;\"> p3<\/span> \u548c<span style=\"background-color: #ccffff;\"> p5<\/span> \uff0cp2\u6307\u5411\u7684\u6570\u5b57\u6c38\u8fdc\u4e582\uff0cp3\u6307\u5411\u7684\u6570\u5b57\u6c38\u8fdc\u4e583\uff0cp5\u6307\u5411\u7684\u6570\u5b57\u6c38\u8fdc\u4e585\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u56e0\u4e3a\u662f\u5347\u5e8f\u5b58\u653e\uff0c\u6211\u4eec\u4ece<span style=\"background-color: #ccffff;\"> dp[p2]*2<\/span> \u3001<span style=\"background-color: #ccffff;\"> dp[p3]*3<\/span> \u548c<span style=\"background-color: #ccffff;\"> dp[p5]*5<\/span> \u4e2d\u9009\u53d6\u4e00\u4e2a\u6700\u5c0f\u7684\u6570\uff0c\u5373\u65b0\u4e11\u6570\uff0c\u653e\u8fdbdp\u5c3e\u90e8\uff1b\u7136\u540e\u5c06\u88ab\u9009\u53d6\u7684\u6307\u9488\u5411\u540e\u79fb\u52a8\u4e00\u4f4d\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u63a5\u7740\u5faa\u73af\u6267\u884c\u4e0a\u4e00\u6b65\uff0c\u5faa\u73afn-1\u6b21\u3002<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u6700\u540e\u8fd4\u56dedp\u6570\u7ec4\u6700\u540e\u4e00\u4f4d\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u4e2a\u65b9\u6cd5\u4e0e\u5408\u5e76\u591a\u4e2a\u6392\u5e8f\u6570\u7ec4\u7684\u65b9\u6cd5\u7c7b\u4f3c\uff1a\u6bcf\u4e2a\u6570\u7ec4\u4e00\u4e2a\u6307\u9488\uff0c\u4ece\u5de6\u5f80\u53f3\u6bd4\u8f83\u4e09\u4e2a\u6307\u9488\u6307\u5411\u6570\u5b57\u7684\u5927\u5c0f\uff0c\u5c06\u6700\u5c0f\u7684\u653e\u5165\u65b0\u6570\u7ec4\uff0c\u5e76\u5c06\u6307\u9488\u540e\u79fb\u4e00\u4f4d\uff1b\u82e5\u9047\u5230\u76f8\u540c\u6570\u5b57 \uff0c\u5219\u53ea\u6dfb\u52a0\u4e00\u4e2a\u6570\u5b57\u8fdb\u65b0\u6570\u7ec4\uff0c\u5e76\u4e14\u76f8\u540c\u6570\u5b57\u7684\u6307\u9488\u90fd\u8981\u540e\u79fb\u4e00\u4f4d\u3002\u4e0d\u540c\u7684\u662f\uff0c\u672c\u4f53\u4e2d\u6211\u4eec\u9700\u8981\u5c06\u6570\u5b57\u4e58\u4e0a2\u30013\u6216\u80055\u540e\u518d\u8fdb\u884c\u6bd4\u8f83\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0int\u00a0nthUglyNumber(int\u00a0n)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0dp(n,0);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[0]=1;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0p2=0,p3=0,p5=0;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=1;i&lt;n;++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u53d6\u4e09\u4e2a\u6307\u9488\u6307\u5411\u7684\u6570\u4e58\u56e0\u5b50\u540e\u7684\u6700\u5c0f\u6570\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dp[i]=min(dp[p2]*2,min(dp[p3]*3,dp[p5]*5));\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5c06\u53d6\u5230\u7684\u6570\u7684\u6307\u9488\u5411\u540e\u79fb\u4e00\u4f4d\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(dp[i]==dp[p2]*2)\u00a0++p2;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(dp[i]==dp[p3]*3)\u00a0++p3;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(dp[i]==dp[p5]*5)\u00a0++p5;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0dp[n-1];\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989850. \u7b2c\u4e00\u4e2a\u53ea\u51fa\u73b0\u4e00\u6b21\u7684\u5b57\u7b26<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u5b57\u7b26\u4e32 s \u4e2d\u627e\u51fa\u7b2c\u4e00\u4e2a\u53ea\u51fa\u73b0\u4e00\u6b21\u7684\u5b57\u7b26\u3002\u5982\u679c\u6ca1\u6709\uff0c\u8fd4\u56de\u4e00\u4e2a\u5355\u7a7a\u683c\u3002 s \u53ea\u5305\u542b\u5c0f\u5199\u5b57\u6bcd\u3002<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_50_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"192\" height=\"255\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_50_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-639\"\/><\/div><\/figure>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u601d\u8def\u4e00\uff1a\u54c8\u5e0c\u8868<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5b57\u7b26\u4f5c\u4e3akey\uff0c\u5b57\u7b26\u51fa\u73b0\u7684\u6b21\u6570\u4f5c\u4e3avalue\u6784\u9020\u54c8\u5e0c\u8868\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7136\u540e\u9010\u4e2a\u5b57\u7b26\u626b\u63cf\u5b57\u7b26\u4e32s\uff0c\u82e5\u8be5\u5b57\u7b26\u7684value\u4e3a1\uff0c\u5219\u8fd4\u56de\u5b83\u3002<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0char\u00a0firstUniqChar(string\u00a0s)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unordered_map&lt;char,int>\u00a0mp;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(char\u00a0c:s)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0++mp[c];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(char\u00a0c:s)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mp[c]==1)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0c;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0'\u00a0';\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u601d\u8def\u4e8c\uff1a\u6570\u7ec4<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0char\u00a0firstUniqChar(string\u00a0s)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/26\u4e2a\u5b57\u6bcd\u4e00\u4e2a\u5b57\u6bcd\u4e00\u4e2a\u5751\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0vector&lt;int>\u00a0v(26);\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(char\u00a0ch:s)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0v[ch-'a']++;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for(int\u00a0i=0;i&lt;s.size();++i)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(v[s[i]-'a']==1)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0s[i];\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0'\u00a0';\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8fd9\u9053\u9898\u7528\u6570\u7ec4\u6bd4\u54c8\u5e0c\u8868\u66f4\u5feb\uff0c\u4f46\u6269\u5c55\u6027\u4e0d\u592a\u597d\uff0c\u82e5\u5b57\u7b26\u8303\u56f4\u6269\u5927\uff0c\u5219\u9700\u8981\u6539\u5199\u65b9\u6cd5\u3002<\/span><\/p>\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n<h1><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53; font-size: 24pt; color: #000000;\">\u9762\u8bd5\u989852. \u4e24\u4e2a\u94fe\u8868\u7684\u7b2c\u4e00\u4e2a\u516c\u5171\u8282\u70b9<\/span><\/h1>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u8f93\u5165\u4e24\u4e2a\u94fe\u8868\uff0c\u627e\u51fa\u5b83\u4eec\u7684\u7b2c\u4e00\u4e2a\u516c\u5171\u8282\u70b9\u3002<\/span><br><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u4e0b\u9762\u7684\u4e24\u4e2a\u94fe\u8868\uff1a<\/span><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_52_0.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"449\" height=\"508\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_52_0.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-645\"  sizes=\"auto, (max-width: 449px) 100vw, 449px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_52_1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"440\" height=\"719\" data-original=\"https:\/\/summid.icu\/wp-content\/uploads\/2020\/05\/offer_52_1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-646\"  sizes=\"auto, (max-width: 440px) 100vw, 440px\" \/><\/div><\/figure>\n\n\n<p><span style=\"font-size: inherit; font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u6ce8\u610f<\/strong>\uff1a<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u4e24\u4e2a\u94fe\u8868\u6ca1\u6709\u4ea4\u70b9\uff0c\u8fd4\u56de null.<\/span><br \/><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5728\u8fd4\u56de\u7ed3\u679c\u540e\uff0c\u4e24\u4e2a\u94fe\u8868\u4ecd\u987b\u4fdd\u6301\u539f\u6709\u7684\u7ed3\u6784\u3002<\/span><br \/><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u53ef\u5047\u5b9a\u6574\u4e2a\u94fe\u8868\u7ed3\u6784\u4e2d\u6ca1\u6709\u5faa\u73af\u3002<\/span><br \/><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u7a0b\u5e8f\u5c3d\u91cf\u6ee1\u8db3 O(n) \u65f6\u95f4\u590d\u6742\u5ea6\uff0c\u4e14\u4ec5\u7528 O(1) \u5185\u5b58\u3002<\/span><\/p>\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\"><strong>\u601d\u8def<\/strong>\uff1a\u53cc\u6307\u9488<\/span><\/p>\n<ul>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e24\u4e2a\u6307\u9488node1\u3001node2\u5206\u522b\u6307\u5411\u4e24\u4e2a\u94fe\u8868\u7684\u5934\u7ed3\u70b9headA\u548cheadB\u3002<\/span><br \/><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u4e24\u6307\u9488\u540c\u65f6\u5411\u540e\u904d\u5386\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53node1\u6307\u5411\u94fe\u8868\u672b\u5c3e\u7684null\u65f6\uff0c\u8df3\u8f6c\u5230headB\uff0c\u7136\u540e\u7ee7\u7eed\u904d\u5386\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5f53node2\u6307\u5411\u94fe\u8868\u672b\u5c3e\u7684null\u65f6\uff0c\u8df3\u8f6c\u5230headA\uff0c\u7136\u540e\u7ee7\u7eed\u904d\u5386\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u4e24\u4e2a\u94fe\u8868\u6709\u516c\u5171\u8282\u70b9\uff0c\u5219\uff08\u5728\u7b2c\u4e8c\u6b21\u904d\u5386\u4e2d\uff09\u5f53\u4e24\u6307\u9488\u76f8\u7b49\u65f6\uff0c\u5c31\u6307\u5411\u4e86\u516c\u5171\u8282\u70b9\uff1b<\/span><\/li>\n<li><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u5982\u679c\u4e24\u4e2a\u94fe\u8868\u6ca1\u6709\u516c\u5171\u8282\u70b9\uff0c\u5f53\u4e24\u6307\u9488\uff08\u5728\u7b2c\u4e8c\u6b21\u904d\u5386\u7684\u6700\u540e\uff09\u90fd\u6307\u5411null\u65f6\uff0c\u4ee3\u8868\u4e24\u4e2a\u94fe\u8868\u6ca1\u6709\u516c\u5171\u8282\u70b9\u3002<\/span><\/li>\n<\/ul>\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<\/div><\/div>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*getIntersectionNode(ListNode\u00a0*headA,\u00a0ListNode\u00a0*headB)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*node1\u00a0=\u00a0headA;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*node2\u00a0=\u00a0headB;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while(node1\u00a0!=\u00a0node2)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(node1\u00a0!=\u00a0nullptr)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node1\u00a0=\u00a0node1->next;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node1\u00a0=\u00a0headB;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(node2\u00a0!=\u00a0nullptr)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node2\u00a0=\u00a0node2->next;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else\u00a0\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node2\u00a0=\u00a0headA;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0node1;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n<p><span style=\"font-family: 'Microsoft YaHei', 'Microsoft JhengHei', \u9ed1\u4f53;\">\u987a\u4fbf\u8d34\u4e00\u4e2a\u7528\u54c8\u5e0c\u8868\u7684\u4ee3\u7801\uff1a<\/span><\/p>\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"cpp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class\u00a0Solution\u00a0{\npublic:\n\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*getIntersectionNode(ListNode\u00a0*headA,\u00a0ListNode\u00a0*headB)\u00a0\n\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*node1\u00a0=\u00a0headA;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ListNode\u00a0*node2\u00a0=\u00a0headB;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unordered_map&lt;ListNode\u00a0*,int>\u00a0mp;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while(node1\u00a0!=\u00a0nullptr\u00a0||\u00a0node2\u00a0!=\u00a0nullptr)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(node1\u00a0!=\u00a0nullptr)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mp.find(node1)\u00a0!=\u00a0mp.end())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0node1;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mp[node1]\u00a0=\u00a0node1->val;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node1\u00a0=\u00a0node1->next;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(node2\u00a0!=\u00a0nullptr)\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mp.find(node2)\u00a0!=\u00a0mp.end())\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0node2;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mp[node2]\u00a0=\u00a0node2->val;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0node2\u00a0=\u00a0node2->next;\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0NULL;\n\u00a0\u00a0\u00a0\u00a0}\n};<\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n","protected":false},"excerpt":{"rendered":"<p>\u9762\u8bd5\u989839. \u6570\u7ec4\u4e2d\u51fa\u73b0\u6b21\u6570\u8d85\u8fc7\u4e00\u534a\u7684\u6570\u5b57 \u6570\u7ec4\u4e2d\u6709\u4e00\u4e2a\u6570\u5b57\u51fa\u73b0\u7684\u6b21\u6570\u8d85\u8fc7\u6570\u7ec4\u957f\u5ea6\u7684\u4e00\u534a\uff0c\u8bf7\u627e\u51fa\u8fd9\u4e2a\u6570\u5b57\u3002\u4f60\u53ef [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1092","post","type-post","status-publish","format-standard","hentry","category-leetcode"],"_links":{"self":[{"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/posts\/1092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/comments?post=1092"}],"version-history":[{"count":29,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/posts\/1092\/revisions"}],"predecessor-version":[{"id":1303,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/posts\/1092\/revisions\/1303"}],"wp:attachment":[{"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/media?parent=1092"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/categories?post=1092"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/summid.icu\/index.php\/wp-json\/wp\/v2\/tags?post=1092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}