{"id":38048,"date":"2023-07-11T11:40:13","date_gmt":"2023-07-11T03:40:13","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=38048"},"modified":"2023-07-31T00:38:59","modified_gmt":"2023-07-30T16:38:59","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8c%b9%e9%85%8d%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/38048.html","title":{"rendered":"\u4ec0\u4e48\u662f\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5"},"content":{"rendered":"<blockquote class=\"wp-block-quote\">\n<p>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u662f\u7528\u4e8e\u5728\u4e00\u4e2a\u6587\u672c\u4e32\u4e2d\u67e5\u627e\u7279\u5b9a\u6a21\u5f0f\u4e32\u7684\u65b9\u6cd5\u3002\u5b83\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u548c\u4fe1\u606f\u68c0\u7d22\u9886\u57df\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5e94\u7528\u3002\u5e38\u89c1\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u5305\u62ec\u6734\u7d20\u7b97\u6cd5\u3001KMP\u7b97\u6cd5\u3001Boyer-Moore\u7b97\u6cd5\u548cRabin-Karp\u7b97\u6cd5\u7b49\u3002\u8fd9\u4e9b\u7b97\u6cd5\u6839\u636e\u4e0d\u540c\u7684\u601d\u60f3\u548c\u7b56\u7565\uff0c\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u5339\u914d\u6548\u7387\u548c\u590d\u6742\u5ea6\u3002\u5b57\u7b26\u4e32\u5339\u914d\u95ee\u9898\u53ef\u4ee5\u7b80\u5355\u63cf\u8ff0\u4e3a\u5728\u7ed9\u5b9a\u7684\u6587\u672c\u4e32\u4e2d\u67e5\u627e\u4e0e\u6a21\u5f0f\u4e32\u5b8c\u5168\u5339\u914d\u7684\u5b50\u4e32\u6216\u4f4d\u7f6e\u3002<\/p>\n<\/blockquote>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" alt=\"\" class=\"wp-image-38049\" decoding=\"async\" height=\"421\" sizes=\"(max-width: 680px) 100vw, 680px\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-27-1.png?x-oss-process=image\/auto-orient,1\/format,webp\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-27-1.png?x-oss-process=image\/auto-orient,1\/format,webp 680w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/07\/\u6dfb\u52a0\u6807\u9898-27-1-300x186.png 300w\" width=\"680\"\/><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><strong>\u4ec0\u4e48\u662f\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5<\/strong><\/h2>\n<p>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u662f\u7528\u4e8e\u5728\u4e00\u4e2a\u6587\u672c\u4e32\u4e2d\u67e5\u627e\u7279\u5b9a\u6a21\u5f0f\u4e32\u7684\u65b9\u6cd5\u3002\u5b83\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u548c\u4fe1\u606f\u68c0\u7d22\u9886\u57df\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5e94\u7528\u3002\u5b57\u7b26\u4e32\u5339\u914d\u95ee\u9898\u53ef\u4ee5\u7b80\u5355\u63cf\u8ff0\u4e3a\u5728\u7ed9\u5b9a\u7684\u6587\u672c\u4e32\u4e2d\u67e5\u627e\u4e0e\u6a21\u5f0f\u4e32\u5b8c\u5168\u5339\u914d\u7684\u5b50\u4e32\u6216\u4f4d\u7f6e\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u5e38\u89c1\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5<\/strong><\/h2>\n<p><strong>\u6734\u7d20\u7b97\u6cd5\uff08Naive Algorithm\uff09: <\/strong>\u6734\u7d20\u7b97\u6cd5\u662f\u6700\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u4e4b\u4e00\u3002\u5b83\u901a\u8fc7\u904d\u5386\u6587\u672c\u4e32\u4e2d\u7684\u6bcf\u4e2a\u4f4d\u7f6e\uff0c\u9010\u4e2a\u6bd4\u8f83\u5b57\u7b26\uff0c\u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u3002\u6734\u7d20\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(m*n)\uff0c\u5176\u4e2dm\u4e3a\u6a21\u5f0f\u4e32\u957f\u5ea6\uff0cn\u4e3a\u6587\u672c\u4e32\u957f\u5ea6\u3002<\/p>\n<p><strong>KMP<\/strong><strong>\u7b97\u6cd5\uff08Knuth-Morris-Pratt Algorithm\uff09:<\/strong> KMP\u7b97\u6cd5\u662f\u4e00\u79cd\u9ad8\u6548\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u3002\u5b83\u901a\u8fc7\u9884\u5904\u7406\u6a21\u5f0f\u4e32\uff0c\u6784\u5efa\u4e00\u4e2a\u6700\u957f\u516c\u5171\u524d\u540e\u7f00\uff08LPS\uff09\u8868\uff0c\u4ece\u800c\u5b9e\u73b0\u5728\u5339\u914d\u8fc7\u7a0b\u4e2d\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6bd4\u8f83\u3002KMP\u7b97\u6cd5\u7684\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(m+n)\uff0c\u5176\u4e2dm\u4e3a\u6a21\u5f0f\u4e32\u957f\u5ea6\uff0cn\u4e3a\u6587\u672c\u4e32\u957f\u5ea6\u3002<\/p>\n<p><strong>Boyer-Moore<\/strong><strong>\u7b97\u6cd5: <\/strong>Boyer-Moore\u7b97\u6cd5\u662f\u4e00\u79cd\u57fa\u4e8e\u574f\u5b57\u7b26\u548c\u597d\u540e\u7f00\u89c4\u5219\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u3002\u5b83\u901a\u8fc7\u9884\u5904\u7406\u6a21\u5f0f\u4e32\uff0c\u5229\u7528\u574f\u5b57\u7b26\u89c4\u5219\u548c\u597d\u540e\u7f00\u89c4\u5219\uff0c\u5728\u5339\u914d\u8fc7\u7a0b\u4e2d\u8df3\u8fc7\u5c3d\u53ef\u80fd\u591a\u7684\u65e0\u6548\u6bd4\u8f83\u3002Boyer-Moore\u7b97\u6cd5\u5728\u5b9e\u8df5\u4e2d\u5177\u6709\u8f83\u9ad8\u7684\u6548\u7387\u3002<\/p>\n<p><strong>Rabin-Karp<\/strong><strong>\u7b97\u6cd5: <\/strong>Rabin-Karp\u7b97\u6cd5\u662f\u4e00\u79cd\u57fa\u4e8e\u54c8\u5e0c\u51fd\u6570\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u3002\u5b83\u901a\u8fc7\u5bf9\u6a21\u5f0f\u4e32\u548c\u6587\u672c\u4e32\u8fdb\u884c\u54c8\u5e0c\u8ba1\u7b97\uff0c\u5e76\u6bd4\u8f83\u54c8\u5e0c\u503c\uff0c\u4ee5\u786e\u5b9a\u662f\u5426\u53d1\u751f\u5339\u914d\u3002Rabin-Karp\u7b97\u6cd5\u5728\u5904\u7406\u957f\u6a21\u5f0f\u4e32\u65f6\u5177\u6709\u4f18\u52bf\u3002<\/p>\n<p>\u8fd9\u4e9b\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u6839\u636e\u4e0d\u540c\u7684\u601d\u60f3\u548c\u7b56\u7565\uff0c\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u5339\u914d\u6548\u7387\u548c\u590d\u6742\u5ea6\u3002\u9009\u62e9\u9002\u5408\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\u548c\u6027\u80fd\u8981\u6c42\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u5ef6\u4f38\u9605\u8bfb<\/strong><\/h2>\n<p><strong>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u6027\u80fd\u4f18\u5316<\/strong><\/p>\n<p>\u5b66\u4e60\u5982\u4f55\u4f18\u5316\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u6027\u80fd\uff0c\u5305\u62ec\u51cf\u5c11\u6bd4\u8f83\u6b21\u6570\u3001\u63d0\u524d\u7ec8\u6b62\u5339\u914d\u3001\u5229\u7528\u9884\u5904\u7406\u4fe1\u606f\u7b49\u3002\u4e86\u89e3\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u4f18\u5316\u6280\u5de7\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5339\u914d\u7684\u6548\u7387\u548c\u901f\u5ea6\u3002<\/p>\n<p><strong>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u5728\u6587\u672c\u641c\u7d22\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p>\u4e86\u89e3\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u5728\u6587\u672c\u641c\u7d22\u548c\u4fe1\u606f\u68c0\u7d22\u4e2d\u7684\u5e94\u7528\uff0c\u5982\u641c\u7d22\u5f15\u64ce\u3001\u5173\u952e\u8bcd\u5339\u914d\u548c\u6570\u636e\u6316\u6398\u7b49\u3002\u5b66\u4e60\u5982\u4f55\u4f7f\u7528\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u6765\u5b9e\u73b0\u9ad8\u6548\u7684\u6587\u672c\u641c\u7d22\u548c\u4fe1\u606f\u63d0\u53d6\u3002<\/p>\n<p><strong>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u5728\u7f16\u7a0b\u7ade\u8d5b\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p>\u5b66\u4e60\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u5728\u7f16\u7a0b\u7ade\u8d5b\u548c\u7b97\u6cd5\u7ade\u8d5b\u4e2d\u7684\u5e94\u7528\uff0c\u5982ACM\u56fd\u9645\u5927\u5b66\u751f\u7a0b\u5e8f\u8bbe\u8ba1\u7ade\u8d5b\u3001Google Code Jam\u7b49\u3002\u4e86\u89e3\u9ad8\u6548\u7684\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u7f16\u7a0b\u7ade\u8d5b\u4e2d\u83b7\u5f97\u66f4\u597d\u7684\u6210\u7ee9\u3002<\/p>\n<p><strong>\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u5b9e\u9645\u6848\u4f8b\u548c\u5b9e\u73b0<\/strong><\/p>\n<p>\u5b66\u4e60\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u5b9e\u9645\u6848\u4f8b\u548c\u5b9e\u73b0\uff0c\u5982\u641c\u7d22\u5b57\u7b26\u4e32\u3001\u66ff\u6362\u5b57\u7b26\u4e32\u3001\u5339\u914d\u6a21\u5f0f\u7b49\u3002\u901a\u8fc7\u5b9e\u8df5\u548c\u7ec3\u4e60\uff0c\u638c\u63e1\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u7684\u5177\u4f53\u5e94\u7528\u548c\u5b9e\u73b0\u6280\u5de7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5b57\u7b26\u4e32\u5339\u914d\u7b97\u6cd5\u662f\u7528\u4e8e\u5728\u4e00\u4e2a\u6587\u672c\u4e32\u4e2d\u67e5\u627e\u7279\u5b9a\u6a21\u5f0f\u4e32\u7684\u65b9\u6cd5\u3002\u5b83\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u548c\u4fe1\u606f\u68c0\u7d22\u9886\u57df\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5e94\u7528\u3002\u5e38\u89c1\u7684\u5b57 [&hellip;]","protected":false},"author":1,"featured_media":38049,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/38048"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=38048"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/38048\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/38049"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=38048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=38048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=38048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}