{"id":49234,"date":"2024-12-02T08:12:23","date_gmt":"2024-12-02T00:12:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/49234\/"},"modified":"2024-12-02T08:12:23","modified_gmt":"2024-12-02T00:12:23","slug":"%e5%a5%87%e6%80%aa%e7%9a%84%e6%89%93%e5%8d%b0%e6%9c%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/49234\/","title":{"rendered":"\u5947\u602a\u7684\u6253\u5370\u673a"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5947\u602a\u7684\u6253\u5370\u673a<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5947\u602a\u7684\u6253\u5370\u673a\u300b<\/span>\u4e3b\u8981\u8bb2\u89e3\u4e86<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241120\/1732077019673d65db7e87f.jpg\" class=\"aligncenter\" title=\"\u5947\u602a\u7684\u6253\u5370\u673a\u63d2\u56fe\" alt=\"\u5947\u602a\u7684\u6253\u5370\u673a\u63d2\u56fe\" \/><\/p>\n<p>664\u3002\u5947\u602a\u7684\u6253\u5370\u673a<\/p>\n<p><strong>\u96be\u5ea6\uff1a<\/strong> \u96be<\/p>\n<p><strong>\u4e3b\u9898\uff1a<\/strong> \u5b57\u7b26\u4e32\u3001\u52a8\u6001\u89c4\u5212<\/p>\n<p>\u6709\u4e00\u79cd\u5947\u602a\u7684\u6253\u5370\u673a\uff0c\u5177\u6709\u4ee5\u4e0b\u4e24\u4e2a\u7279\u6b8a\u5c5e\u6027\uff1a<\/p>\n<ul>\n<li>\u6253\u5370\u673a\u6bcf\u6b21\u53ea\u80fd\u6253\u5370\u4e00\u7cfb\u5217<strong>\u76f8\u540c\u7684\u5b57\u7b26<\/strong>\u3002<\/li>\n<li>\u6253\u5370\u673a\u6bcf\u6b21\u90fd\u53ef\u4ee5\u6253\u5370\u4ece\u4efb\u610f\u4f4d\u7f6e\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u65b0\u5b57\u7b26\uff0c\u5e76\u4e14\u4f1a\u8986\u76d6\u539f\u6765\u5b58\u5728\u7684\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u5b57\u7b26\u4e32 s\uff0c\u8fd4\u56de<em>\u6253\u5370\u673a\u6253\u5370\u5b83\u6240\u9700\u7684\u6700\u5c0f\u8f6c\u6570<\/em>.<\/p>\n<p><strong>\u793a\u4f8b1\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u8f93\u5165\uff1a<\/strong> s = &#8220;aaabbb&#8221;<\/li>\n<li> <strong>\u8f93\u51fa\uff1a<\/strong> 2<\/li>\n<li> <strong>\u8bf4\u660e\uff1a<\/strong> \u5148\u6253\u5370\u201caaa\u201d\uff0c\u518d\u6253\u5370\u201cbbb\u201d\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b2\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u8f93\u5165\uff1a<\/strong> s = &#8220;aba&#8221;<\/li>\n<li> <strong>\u8f93\u51fa\uff1a<\/strong> 2<\/li>\n<li> <strong>\u8bf4\u660e\uff1a<\/strong> \u5148\u6253\u5370\u201caaa\u201d\uff0c\u7136\u540e\u4ece\u5b57\u7b26\u4e32\u7684\u7b2c\u4e8c\u4f4d\u5f00\u59cb\u6253\u5370\u201cb\u201d\uff0c\u8fd9\u5c06\u8986\u76d6\u73b0\u6709\u7684\u5b57\u7b26\u201ca\u201d\u3002<\/li>\n<\/ul>\n<p><strong>\u9650\u5236\uff1a<\/strong><\/p>\n<ul>\n<li>1 &lt;= s.length &lt;= 100<\/li>\n<li> s \u7531\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd\u7ec4\u6210\u3002<\/li>\n<\/ul>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u3002\u8fd9\u4e2a\u60f3\u6cd5\u662f\u901a\u8fc7\u5c06\u5b57\u7b26\u4e32\u5206\u89e3\u4e3a\u5b50\u95ee\u9898\u6765\u6700\u5c0f\u5316\u6253\u5370\u5b57\u7b26\u4e32\u6240\u9700\u7684\u8f6e\u6570\u3002<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u6765\u89e3\u51b3\u3002\u8fd9\u4e2a\u60f3\u6cd5\u662f\u5c06\u95ee\u9898\u5206\u6210\u66f4\u5c0f\u7684\u5b50\u95ee\u9898\uff0c\u5728\u8fd9\u4e9b\u5b50\u95ee\u9898\u4e2d\u786e\u5b9a\u6253\u5370 s \u7684\u6bcf\u4e2a\u5b50\u5b57\u7b26\u4e32\u6240\u9700\u7684\u6700\u5c0f\u5708\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u4ee5\u4e0b\u89c2\u5bdf\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u4e24\u4e2a\u76f8\u90bb\u5b57\u7b26\u76f8\u540c\uff0c\u53ef\u4ee5\u6269\u5c55\u4e4b\u524d\u7684\u64cd\u4f5c\uff0c\u800c\u4e0d\u662f\u7b97\u4f5c\u65b0\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h3> \u52a8\u6001\u89c4\u5212\u89e3\u51b3\u65b9\u6848 <\/h3>\n<p>\u8bbe dp[i][j] \u4e3a\u6253\u5370\u5b50\u4e32 s[i:j+1] \u6240\u9700\u7684\u6700\u5c0f\u5708\u6570\u3002<\/p>\n<ol>\n<li>\u5982\u679c s[i] == s[j]\uff0c\u5219 dp[i][j] = dp[i][j-1] \u56e0\u4e3a\u6700\u540e\u4e00\u4e2a\u5b57\u7b26 s[j] \u53ef\u4ee5\u901a\u8fc7\u524d\u9762\u7684\u64cd\u4f5c\u6253\u5370\u51fa\u6765\u3002<\/li>\n<li>\u5426\u5219\uff0cdp[i][j] = min(dp[i][k] + dp[k+1][j]) \u5bf9\u4e8e\u6240\u6709 i &lt;= k &lt; j.<\/li>\n<\/ol>\n<p>\u8ba9\u6211\u4eec\u7528 php \u5b9e\u73b0\u8fd9\u4e2a\u89e3\u51b3\u65b9\u6848\uff1a<strong>664\u3002\u5947\u602a\u7684\u6253\u5370\u673a<\/strong><\/p>\n<pre>&lt;?php\n\/\/ Test the function with the given examples\necho strangePrinter(\"aaabbb\") . \"\\n\"; \/\/ Output: 2\necho strangePrinter(\"aba\") . \"\\n\";    \/\/ Output: 2\n?&gt;\n<\/pre>\n<h3> \u89e3\u91ca\uff1a <\/h3>\n<ol>\n<li>\n<p><strong>dp\u6570\u7ec4\uff1a<\/strong>\u4e8c\u7ef4\u6570\u7ec4dp[i][j]\u8868\u793a\u6253\u5370\u4ece\u7d22\u5f15i\u5230j\u7684\u5b50\u4e32\u6240\u9700\u7684\u6700\u5c11\u8f6c\u6570\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u521d\u59cb\u5316\uff1a<\/strong> \u6211\u4eec\u521d\u59cb\u5316 dp[i][i] = 1\uff0c\u56e0\u4e3a\u4e00\u6b21\u53ef\u4ee5\u6253\u5370\u5355\u4e2a\u5b57\u7b26\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u586b\u5199 dp \u8868\uff1a<\/strong><\/p>\n<ul>\n<li>\u5982\u679c i \u548c j \u5904\u7684\u5b57\u7b26\u76f8\u540c\uff08$s[$i] == $s[$j]\uff09\uff0c\u5219\u4ece i \u5230 j \u7684\u6253\u5370\u4e0e\u4ece i \u5230 j-1 \u7684\u6253\u5370\u6240\u9700\u7684\u8f6e\u6570\u76f8\u540c\uff0c\u56e0\u4e3a $ s[$j] \u53ef\u4ee5\u4e0e $s[$i] \u540c\u65f6\u6253\u5370\u3002<\/li>\n<li>\u5982\u679c\u5b83\u4eec\u4e0d\u540c\uff0c\u6211\u4eec\u5c1d\u8bd5\u901a\u8fc7\u5728\u4e0d\u540c\u70b9\uff08k\uff09\u5212\u5206\u5b57\u7b26\u4e32\u6765\u627e\u5230\u6700\u5c0f\u531d\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>\u7ed3\u679c\uff1a<\/strong> \u6253\u5370\u6574\u4e2a\u5b57\u7b26\u4e32\u6240\u9700\u7684\u6700\u5c11\u8f6c\u6570\u5b58\u50a8\u5728 dp[0][$n &#8211; 1] \u4e2d\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u8be5\u89e3\u51b3\u65b9\u6848\u901a\u8fc7\u8003\u8651\u6240\u6709\u53ef\u80fd\u7684\u5206\u5272\u548c\u6253\u5370\u5b57\u7b26\u4e32\u7684\u65b9\u5f0f\uff0c\u6709\u6548\u5730\u8ba1\u7b97\u6253\u5370\u5b57\u7b26\u4e32\u6240\u9700\u7684\u6700\u5c0f\u5708\u6570\u3002<\/p>\n<p><strong>\u8054\u7cfb\u94fe\u63a5<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u53d1\u73b0\u672c\u7cfb\u5217\u6709\u5e2e\u52a9\uff0c\u8bf7\u8003\u8651\u5728 github \u4e0a\u7ed9<strong>\u5b58\u50a8\u5e93<\/strong> \u4e00\u9897\u661f\uff0c\u6216\u5728\u60a8\u6700\u559c\u6b22\u7684\u793e\u4ea4\u7f51\u7edc\u4e0a\u5206\u4eab\u8be5\u5e16\u5b50?\u3002\u60a8\u7684\u652f\u6301\u5bf9\u6211\u6765\u8bf4\u610f\u4e49\u91cd\u5927\uff01<\/p>\n<p>\u5982\u679c\u60a8\u60f3\u8981\u66f4\u591a\u7c7b\u4f3c\u7684\u6709\u7528\u5185\u5bb9\uff0c\u8bf7\u968f\u65f6\u5173\u6ce8\u6211\uff1a<\/p>\n<ul>\n<li><strong>\u9886\u82f1<\/strong><\/li>\n<li><strong>github<\/strong><\/li>\n<\/ul>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<p> \u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb \u5220\u9664<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5947\u602a\u7684\u6253\u5370\u673a \u6536\u85cf \u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u52aa\u529b\u5b66\u4e60\u5427\uff01\u672c\u6587\u300a\u5947\u602a\u7684\u6253\u5370\u673a\u300b\u4e3b\u8981\u8bb2\u89e3\u4e86\u7b49\u7b49\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6211\u4f1a\u5728\u7c73\u4e91\u4e2d\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u7cfb\u5217\u6587\u7ae0\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u5e76\u79ef\u6781\u7559\u8a00\u5efa\u8bae\u3002\u4e0b\u9762\u5c31\u5148\u4e00\u8d77\u6765\u770b\u4e00\u4e0b\u672c\u7bc7\u6b63\u6587\u5185\u5bb9\u5427\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01 664\u3002\u5947\u602a\u7684\u6253\u5370\u673a \u96be\u5ea6\uff1a \u96be \u4e3b\u9898\uff1a \u5b57\u7b26\u4e32\u3001\u52a8\u6001\u89c4\u5212 \u6709\u4e00\u79cd\u5947\u602a\u7684\u6253\u5370\u673a\uff0c\u5177\u6709\u4ee5\u4e0b\u4e24\u4e2a\u7279\u6b8a\u5c5e\u6027\uff1a \u6253\u5370\u673a\u6bcf\u6b21\u53ea\u80fd\u6253\u5370\u4e00\u7cfb\u5217\u76f8\u540c\u7684\u5b57\u7b26\u3002 \u6253\u5370\u673a\u6bcf\u6b21\u90fd\u53ef\u4ee5\u6253\u5370\u4ece\u4efb\u610f\u4f4d\u7f6e\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u65b0\u5b57\u7b26\uff0c\u5e76\u4e14\u4f1a\u8986\u76d6\u539f\u6765\u5b58\u5728\u7684\u5b57\u7b26\u3002 \u7ed9\u5b9a\u4e00\u4e2a\u5b57\u7b26\u4e32 s\uff0c\u8fd4\u56de\u6253\u5370\u673a\u6253\u5370\u5b83\u6240\u9700\u7684\u6700\u5c0f\u8f6c\u6570. \u793a\u4f8b1\uff1a \u8f93\u5165\uff1a s = &#8220;aaabbb&#8221; \u8f93\u51fa\uff1a 2 \u8bf4\u660e\uff1a \u5148\u6253\u5370\u201caaa\u201d\uff0c\u518d\u6253\u5370\u201cbbb\u201d\u3002 \u793a\u4f8b2\uff1a \u8f93\u5165\uff1a s = &#8220;aba&#8221; \u8f93\u51fa\uff1a 2 \u8bf4\u660e\uff1a \u5148\u6253\u5370\u201caaa\u201d\uff0c\u7136\u540e\u4ece\u5b57\u7b26\u4e32\u7684\u7b2c\u4e8c\u4f4d\u5f00\u59cb\u6253\u5370\u201cb\u201d\uff0c\u8fd9\u5c06\u8986\u76d6\u73b0\u6709\u7684\u5b57\u7b26\u201ca\u201d\u3002 \u9650\u5236\uff1a 1 &lt;= s.length &lt;= 100 s \u7531\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd\u7ec4\u6210\u3002 \u89e3\u51b3\u65b9\u6848\uff1a \u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u3002\u8fd9\u4e2a\u60f3\u6cd5\u662f\u901a\u8fc7\u5c06\u5b57\u7b26\u4e32\u5206\u89e3\u4e3a\u5b50\u95ee\u9898\u6765\u6700\u5c0f\u5316\u6253\u5370\u5b57\u7b26\u4e32\u6240\u9700\u7684\u8f6e\u6570\u3002 \u8fd9\u4e2a\u95ee\u9898\u53ef\u4ee5\u4f7f\u7528\u52a8\u6001\u89c4\u5212\u6765\u89e3\u51b3\u3002\u8fd9\u4e2a\u60f3\u6cd5\u662f\u5c06\u95ee\u9898\u5206\u6210\u66f4\u5c0f\u7684\u5b50\u95ee\u9898\uff0c\u5728\u8fd9\u4e9b\u5b50\u95ee\u9898\u4e2d\u786e\u5b9a\u6253\u5370 s \u7684\u6bcf\u4e2a\u5b50\u5b57\u7b26\u4e32\u6240\u9700\u7684\u6700\u5c0f\u5708\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u4ee5\u4e0b\u89c2\u5bdf\uff1a \u5982\u679c\u4e24\u4e2a\u76f8\u90bb\u5b57\u7b26\u76f8\u540c\uff0c\u53ef\u4ee5\u6269\u5c55\u4e4b\u524d\u7684\u64cd\u4f5c\uff0c\u800c\u4e0d\u662f\u7b97\u4f5c\u65b0\u64cd\u4f5c\u3002 \u52a8\u6001\u89c4\u5212\u89e3\u51b3\u65b9\u6848 \u8bbe dp[i][j] \u4e3a\u6253\u5370\u5b50\u4e32 s[i:j+1] \u6240\u9700\u7684\u6700\u5c0f\u5708\u6570\u3002 \u5982\u679c s[i] == s[j]\uff0c\u5219 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-49234","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=49234"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49234\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=49234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=49234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=49234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}