“`” \u53c2\u8003\u56de\u7b54\uff1a<\/p>\n
\u6982\u5ff5<\/p>\n
\u7f16\u8f91\u8ddd\u79bb\u7684\u4f5c\u7528\u4e3b\u8981\u662f\u7528\u6765\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u7684\u76f8\u4f3c\u5ea6\u7684<\/p>\n
\u7f16\u8f91\u8ddd\u79bb\uff0c\u53c8\u79f0Levenshtein\u8ddd\u79bb\uff08\u83b1\u6587\u65af\u5766\u8ddd\u79bb\u4e5f\u53eb\u505aEdit Distance\uff09\uff0c\u662f\u6307\u4e24\u4e2a\u5b57\u4e32\u4e4b\u95f4\uff0c\u7531\u4e00\u4e2a\u8f6c\u6210\u53e6\u4e00\u4e2a\u6240\u9700\u7684\u6700\u5c11\u7f16\u8f91\u64cd\u4f5c\u6b21\u6570\uff0c\u5982\u679c\u5b83\u4eec\u7684\u8ddd\u79bb\u8d8a\u5927\uff0c\u8bf4\u660e\u5b83\u4eec\u8d8a\u662f\u4e0d\u540c\u3002\u8bb8\u53ef\u7684\u7f16\u8f91\u64cd\u4f5c\u5305\u62ec\u5c06\u4e00\u4e2a\u5b57\u7b26\u66ff\u6362\u6210\u53e6\u4e00\u4e2a\u5b57\u7b26\uff0c\u63d2\u5165\u4e00\u4e2a\u5b57\u7b26\uff0c\u5220\u9664\u4e00\u4e2a\u5b57\u7b26\u3002<\/p>\n
\u5728\u6982\u5ff5\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\u4e00\u4e9b\u91cd\u70b9\u90a3\u5c31\u662f\uff0c\u7f16\u8f91\u64cd\u4f5c\u53ea\u6709\u4e09\u79cd\u3002\u63d2\u5165\uff0c\u5220\u9664\uff0c\u66ff\u6362\u8fd9\u4e09\u79cd\u64cd\u4f5c\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u5b57\u7b26\u4e32\uff0c\u5c06\u5176\u4e2d\u4e00\u4e2a\u5b57\u7b26\u4e32\u7ecf\u8fc7\u4e0a\u9762\u7684\u8fd9\u4e09\u79cd\u64cd\u4f5c\u4e4b\u540e\uff0c\u5f97\u5230\u4e24\u4e2a\u5b8c\u5168\u76f8\u540c\u7684\u5b57\u7b26\u4e32\u4ed8\u51fa\u7684\u4ee3\u4ef7\u662f\u4ec0\u4e48\u5c31\u662f\u6211\u4eec\u8981\u8ba8\u8bba\u548c\u8ba1\u7b97\u7684\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
\u6211\u4eec\u6709\u4e24\u4e2a\u5b57\u7b26\u4e32\uff1akitten \u548c sitting:<\/p>\n
\u73b0\u5728\u6211\u4eec\u8981\u5c06kitten\u8f6c\u6362\u6210sitting<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u505a\u5982\u4e0b\u7684\u4e00\u4e9b\u64cd\u4f5c\uff1b<\/p>\n
kitten\u2013>sitten \u5c06K\u66ff\u6362\u6210S sitten\u2013> sittin \u5c06e\u66ff\u6362\u6210i<\/p>\n
sittin\u2013> sitting \u6dfb\u52a0g<\/p>\n
\u5728\u8fd9\u91cc\u6211\u4eec\u8bbe\u7f6e\u6bcf\u7ecf\u8fc7\u4e00\u6b21\u7f16\u8f91\uff0c\u4e5f\u5c31\u662f\u53d8\u5316\uff08\u63d2\u5165\uff0c\u5220\u9664\uff0c\u66ff\u6362\uff09\u6211\u4eec\u82b1\u8d39\u7684\u4ee3\u4ef7\u90fd\u662f1\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
\u5982\u679cstr1=\u201divan\u201d\uff0cstr2=\u201divan\u201d\uff0c\u90a3\u4e48\u7ecf\u8fc7\u8ba1\u7b97\u540e\u7b49\u4e8e 0\u3002\u6ca1\u6709\u7ecf\u8fc7\u8f6c\u6362\u3002\u76f8\u4f3c\u5ea6=1-0\/Math.Max(str1.length,str2.length)=1<\/p>\n
\u5982\u679cstr1=\u201divan1\u201d\uff0cstr2=\u201divan2\u201d\uff0c\u90a3\u4e48\u7ecf\u8fc7\u8ba1\u7b97\u540e\u7b49\u4e8e1\u3002str1\u7684\u201d1\u201d\u8f6c\u6362\u201d2\u201d\uff0c\u8f6c\u6362\u4e86\u4e00\u4e2a\u5b57\u7b26\uff0c\u6240\u4ee5\u8ddd\u79bb\u662f1\uff0c\u76f8\u4f3c\u5ea6=1-1\/Math.Max(str1.length,str2.length)=0.8<\/p>\n
\u7b97\u6cd5\u8fc7\u7a0b<\/p>\n
1.str1\u6216str2\u7684\u957f\u5ea6\u4e3a0\u8fd4\u56de\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u3002 if(str1.length==0) return str2.length; if(str2.length==0) return str1.length;<\/p>\n
2.\u521d\u59cb\u5316(n+1)<em>(m+1)\u7684\u77e9\u9635d\uff0c\u5e76\u8ba9\u7b2c\u4e00\u884c\u548c\u5217\u7684\u503c\u4ece0\u5f00\u59cb\u589e\u957f\u3002\u626b\u63cf\u4e24\u5b57\u7b26\u4e32\uff08n<\/em>m\u7ea7\u7684\uff09\uff0c\u5982\u679c\uff1astr1[i] == str2[j]\uff0c\u7528temp\u8bb0\u5f55\u5b83\uff0c\u4e3a0\u3002\u5426\u5219temp\u8bb0\u4e3a1\u3002\u7136\u540e\u5728\u77e9\u9635d[i,j]\u8d4b\u4e8ed[i-1,j]+1 \u3001d[i,j-1]+1\u3001d[i-1,j-1]+temp\u4e09\u8005\u7684\u6700\u5c0f\u503c\u3002<\/p>\n
3.\u626b\u63cf\u5b8c\u540e\uff0c\u8fd4\u56de\u77e9\u9635\u7684\u6700\u540e\u4e00\u4e2a\u503cd[n][m]\u5373\u662f\u5b83\u4eec\u7684\u8ddd\u79bb\u3002<\/p>\n
\u8ba1\u7b97\u76f8\u4f3c\u5ea6\u516c\u5f0f\uff1a1-\u5b83\u4eec\u7684\u8ddd\u79bb\/\u4e24\u4e2a\u5b57\u7b26\u4e32\u957f\u5ea6\u7684\u6700\u5927\u503c\u3002<\/p>\n
\u6211\u4eec\u7528\u5b57\u7b26\u4e32\u201civan1\u201d\u548c\u201civan2\u201d\u4e3e\u4f8b\u6765\u770b\u770b\u77e9\u9635\u4e2d\u503c\u7684\u72b6\u51b5\uff1a<\/p>\n
1\u3001\u7b2c\u4e00\u884c\u548c\u7b2c\u4e00\u5217\u7684\u503c\u4ece0\u5f00\u59cb\u589e\u957f<\/p>\n
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190318\/311436_1552907736113_B5AB30D9874713E083BAA7A757A215C6""><\/p>\n
\u56fe\u4e00<\/p>\n
\u9996\u5148\u6211\u4eec\u5148\u521b\u5efa\u4e00\u4e2a\u77e9\u9635\uff0c\u6216\u8005\u8bf4\u662f\u6211\u4eec\u7684\u4e8c\u7ef4\u6570\u5217\uff0c\u5047\u8bbe\u6709\u4e24\u4e2a\u5b57\u7b26\u4e32\uff0c\u6211\u4eec\u7684\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u5206\u522b\u662fm\u548cn\uff0c\u90a3\u4e48\uff0c\u6211\u4eec\u77e9\u9635\u7684\u7ef4\u5ea6\u5c31\u5e94\u8be5\u662f(m+1)*(n+1).<\/p>\n
\u6ce8\u610f\uff0c\u6211\u4eec\u5148\u7ed9\u6570\u5217\u7684\u7b2c\u4e00\u884c\u7b2c\u4e00\u5217\u8d4b\u503c\uff0c\u4ece0\u5f00\u59cb\u9012\u589e\u8d4b\u503c\u3002\u6211\u4eec\u5c31\u5f97\u5230\u4e86\u56fe\u4e00\u7684\u8fd9\u4e2a\u6837\u5b50<\/p>\n
\u4e4b\u540e\u6211\u4eec\u8ba1\u7b97\u7b2c\u4e00\u5217\uff0c\u7b2c\u4e8c\u5217\uff0c\u4f9d\u6b21\u7c7b\u63a8\uff0c\u7b97\u5b8c\u6574\u4e2a\u77e9\u9635\u3002<\/p>\n
\u6211\u4eec\u7684\u8ba1\u7b97\u89c4\u5219\u5c31\u662f\uff1a<\/p>\n
d[i,j]=min(d[i-1,j]+1 \u3001d[i,j-1]+1\u3001d[i-1,j-1]+temp) \u8fd9\u4e09\u4e2a\u5f53\u4e2d\u7684\u6700\u5c0f\u503c\u3002<\/p>\n
\u5176\u4e2d\uff1astr1[i] == str2[j]\uff0c\u7528temp\u8bb0\u5f55\u5b83\uff0c\u4e3a0\u3002\u5426\u5219temp\u8bb0\u4e3a1<\/p>\n
\u6211\u4eec\u7528d[i-1,j]+1\u8868\u793a\u589e\u52a0\u64cd\u4f5c<\/p>\n
d[i,j-1]+1 \u8868\u793a\u6211\u4eec\u7684\u5220\u9664\u64cd\u4f5c<\/p>\n
d[i-1,j-1]+temp\u8868\u793a\u6211\u4eec\u7684\u66ff\u6362\u64cd\u4f5c<\/p>\n
2\u3001\u4e3e\u8bc1\u5143\u7d20\u7684\u4ea7\u751f Matrix[i – 1, j] + 1 ; Matrix[i, j – 1] + 1 ; Matrix[i – 1, j – 1] + t \u4e09\u8005\u5f53\u4e2d\u7684\u6700\u5c0f\u503c<\/p>\n
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190318\/311436_1552907710921_B212FE40FE962FF4D1D5A50525527148""><\/p>\n
3.\u4f9d\u6b21\u7c7b\u63a8\u76f4\u5230\u77e9\u9635\u5168\u90e8\u751f\u6210<\/p>\n
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190318\/311436_1552907671427_65B069D7B84709C0D213CCC5BCA5DD45""><img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190318\/311436_1552907692128_52FE4A9D914C9C8DE3CE549B90EFBF27""><\/p>\n
\u8fd9\u4e2a\u5c31\u5f97\u5230\u4e86\u6211\u4eec\u7684\u6574\u4e2a\u5b8c\u6574\u7684\u77e9\u9635\u3002<\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
“`” \u53c2\u8003\u56de\u7b54\uff1a \u6982\u5ff5 \u7f16\u8f91\u8ddd\u79bb\u7684\u4f5c\u7528\u4e3b\u8981\u662f\u7528\u6765\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u7684\u76f8\u4f3c\u5ea6\u7684 \u7f16\u8f91\u8ddd\u79bb\uff0c […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-45516","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/45516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=45516"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/45516\/revisions"}],"predecessor-version":[{"id":45517,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/45516\/revisions\/45517"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=45516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=45516"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=45516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}