{"id":32987,"date":"2025-04-26T10:26:42","date_gmt":"2025-04-26T02:26:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/32987.html"},"modified":"2025-04-26T10:26:42","modified_gmt":"2025-04-26T02:26:42","slug":"%e3%80%90leetcode%e5%88%b7%e9%a2%98%e6%97%a5%e8%ae%b0%e3%80%91lc-73-%e7%9f%a9%e9%98%b5%e7%bd%ae%e9%9b%b6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/32987.html","title":{"rendered":"\u3010leetcode\u5237\u9898\u65e5\u8bb0\u3011lc.73-\u77e9\u9635\u7f6e\u96f6"},"content":{"rendered":"<p id=\"main-toc\">\u76ee\u5f55<\/p>\n<p id=\"1.%E9%A2%98%E7%9B%AE-toc\" style=\"margin-left:0px\">1.\u9898\u76ee<\/p>\n<p id=\"2.%E4%BB%A3%E7%A0%81-toc\" style=\"margin-left:0px\">2.\u4ee3\u7801<\/p>\n<hr id=\"hr-toc\" \/>\n<h2>1.\u9898\u76ee<\/h2>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u00a0m x n\u00a0\u7684\u77e9\u9635&#xff0c;\u5982\u679c\u4e00\u4e2a\u5143\u7d20\u4e3a\u00a00\u00a0&#xff0c;\u5219\u5c06\u5176\u6240\u5728\u884c\u548c\u5217\u7684\u6240\u6709\u5143\u7d20\u90fd\u8bbe\u4e3a\u00a00\u00a0\u3002\u8bf7\u4f7f\u7528\u00a0\u539f\u5730\u00a0\u7b97\u6cd5\u3002<\/p>\n<ul><\/ul>\n<\/p>\n<p>\u793a\u4f8b 1&#xff1a;<\/p>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"241\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250426022640-680c4460a22e2.jpg\" width=\"641\" \/><\/p>\n<p>\u8f93\u5165&#xff1a;matrix &#061; [[1,1,1],[1,0,1],[1,1,1]]<br \/>\n\u8f93\u51fa&#xff1a;[[1,0,1],[0,0,0],[1,0,1]]<\/p>\n<p>\u793a\u4f8b 2&#xff1a;<\/p>\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"241\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250426022640-680c4460e24a5.jpg\" width=\"791\" \/><\/p>\n<p>\u8f93\u5165&#xff1a;matrix &#061; [[0,1,2,0],[3,4,5,2],[1,3,1,5]]<br \/>\n\u8f93\u51fa&#xff1a;[[0,0,0,0],[0,4,5,0],[0,3,1,0]]<\/p>\n<p>\u63d0\u793a&#xff1a;<\/p>\n<ul>\n<li>m &#061;&#061; matrix.length<\/li>\n<li>n &#061;&#061; matrix[0].length<\/li>\n<li>1 &lt;&#061; m, n &lt;&#061; 200<\/li>\n<li>-231 &lt;&#061; matrix[i][j] &lt;&#061; 231 &#8211; 1<\/li>\n<\/ul>\n<p>\u8fdb\u9636&#xff1a;<\/p>\n<ul>\n<li>\u4e00\u4e2a\u76f4\u89c2\u7684\u89e3\u51b3\u65b9\u6848\u662f\u4f7f\u7528 \u00a0O(mn)\u00a0\u7684\u989d\u5916\u7a7a\u95f4&#xff0c;\u4f46\u8fd9\u5e76\u4e0d\u662f\u4e00\u4e2a\u597d\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n<li>\u4e00\u4e2a\u7b80\u5355\u7684\u6539\u8fdb\u65b9\u6848\u662f\u4f7f\u7528\u00a0O(m\u00a0&#043;\u00a0n)\u00a0\u7684\u989d\u5916\u7a7a\u95f4&#xff0c;\u4f46\u8fd9\u4ecd\u7136\u4e0d\u662f\u6700\u597d\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n<li>\u4f60\u80fd\u60f3\u51fa\u4e00\u4e2a\u4ec5\u4f7f\u7528\u5e38\u91cf\u7a7a\u95f4\u7684\u89e3\u51b3\u65b9\u6848\u5417&#xff1f;<\/li>\n<\/ul>\n<h2 id=\"2.%E4%BB%A3%E7%A0%81\">2.\u4ee3\u7801<\/h2>\n<p>class Solution {<br \/>\npublic:<br \/>\n    void setZeroes(vector&lt;vector&lt;int&gt;&gt;&amp; matrix) {<br \/>\n        int m &#061; matrix.size();<br \/>\n        int n &#061; matrix[0].size();<br \/>\n        std::vector&lt;bool&gt; rows(m, false);<br \/>\n        std::vector&lt;bool&gt; cols(n, false);<\/p>\n<p>        \/\/ \u8bb0\u5f55\u54ea\u4e9b\u884c\u548c\u5217\u4e2d\u5b58\u5728\u503c\u4e3a 0 \u7684\u5143\u7d20<br \/>\n        for (int i &#061; 0; i &lt; m; &#043;&#043;i) {<br \/>\n            for (int j &#061; 0; j &lt; n; &#043;&#043;j) {<br \/>\n                if (matrix[i][j] &#061;&#061; 0) {<br \/>\n                    rows[i] &#061; true;<br \/>\n                    cols[j] &#061; true;<br \/>\n                }<br \/>\n            }<br \/>\n        }<\/p>\n<p>        \/\/ \u6839\u636e\u8bb0\u5f55\u7684\u4fe1\u606f\u5c06\u76f8\u5e94\u7684\u884c\u548c\u5217\u7f6e\u4e3a 0<br \/>\n        for (int i &#061; 0; i &lt; m; &#043;&#043;i) {<br \/>\n            for (int j &#061; 0; j &lt; n; &#043;&#043;j) {<br \/>\n                if (rows[i] || cols[j]) {<br \/>\n                    matrix[i][j] &#061; 0;<br \/>\n                }<br \/>\n            }<br \/>\n        }<br \/>\n    }<br \/>\n}; <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb200\u6b21\uff0c\u70b9\u8d5e2\u6b21\uff0c\u6536\u85cf2\u6b21\u3002\u3010leetcode\u5237\u9898\u65e5\u8bb0\u3011lc.73-\u77e9\u9635\u7f6e\u96f6<\/p>\n","protected":false},"author":2,"featured_media":32985,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2692,1578],"topic":[],"class_list":["post-32987","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-leetcode","tag-1578"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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