{"id":271,"date":"2022-06-27T12:48:04","date_gmt":"2022-06-27T04:48:04","guid":{"rendered":"https:\/\/www.fengjijiao.cn\/?p=271"},"modified":"2022-06-29T14:44:45","modified_gmt":"2022-06-29T06:44:45","slug":"csharp%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.fengjijiao.cn\/?p=271","title":{"rendered":"C#\u6b63\u5219\u8868\u8fbe\u5f0f"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>using System;\r\nusing System.Text.RegularExpressions;\r\n\r\nnamespace ConsoleApp1\r\n{\r\n    class Program\r\n    {\r\n        static void Main(string&#91;] args)\r\n        {\r\n            \/\/\u6b63\u5219\u8868\u8fbe\u5f0f\r\n\r\n            \/\/\u5b9a\u4e49\u6b63\u5219\u8868\u8fbe\u5f0f\r\n            \/\/1.\u5b57\u7b26\u8f6c\u4e49\r\n            \/*\r\n             * \u8f6c\u4e49\u5b57\u7b26         \u63cf\u8ff0              \u6a21\u5f0f          \u5339\u914d\r\n             * \\a           \u4e0e\u62a5\u8b66\uff08bell\uff09\u7b26\\u0007\u5339\u914d         \\a          \"Warning!\"+'\\u0007'\r\n             * \\b           \u5728\u5b57\u7b26\u7c7b\u4e2d\uff0c\u4e0e\u9000\u683c\u952e\\u0008\u5339\u914d          &#91;\\b]{3,}            \"\\b\\b\\b\\b\"\r\n             * \\t           \u4e0e\u5236\u8868\u7b26\\u0009\u5339\u914d            (\\w+)\\t         \"Name\\tAddr\\t\"\u4e2d\u7684\"Name\\t\"\u548c\"Addr\\t\"\r\n             * \\r           \u4e0e\u56de\u8f66\u7b26\\u000D\u5339\u914d(\\r\u4e0e\u6362\u884c\u7b26\\n\u4e0d\u7b49\u6548)           \\r\\n(\\w+)           \"\\r\\nHello\\nWorld\"\u7684\"\\r\\nHello\"\r\n             * \\v           \u4e0e\u5782\u76f4\u5236\u8868\u7b26\\u000B\u5339\u914d          &#91;\\v]{2,}            \"\\v\\v\\v\"\r\n             * \\f           \u4e0e\u6362\u9875\u7b26\\u000C\u5339\u914d            &#91;\\f]{2,}            \"\\f\\f\\f\"\r\n             * \\n           \u4e0e\u6362\u884c\u7b26\\u000A\u5339\u914d            \\r\\n(w+)            \"\\r\\nHello\\nWorld\"\u4e2d\u7684\\r\\nHello\r\n             * \\e           \u4e0e\u8f6c\u4e49\u7b26\\u001B\u5339\u914d            \\e          \"\\u001B\"\r\n             * \\nnn         \u4f7f\u7528\u516b\u8fdb\u5236\u8868\u793a\u5f62\u5f0f\u6307\u5b9a\u4e00\u4e2a\u5b57\u7b26(nnn\u75312~3\u4f4d\u6570\u5b57\u7ec4\u6210)           \\w\\040\\w            \"a bc d\"\u4e2d\u7684\"a b\"\u548c\"c d\"\r\n             * \\xnn         \u4f7f\u7528\u5341\u516d\u8fdb\u5236\u8868\u793a\u5f62\u5f0f\u6307\u5b9a\u5b57\u7b26\uff08nn\u6070\u597d\u7531\u4e24\u4f4d\u6570\u5b57\u7ec4\u6210\uff09         \\w\\x20\\w            \"a bc d\"\u4e2d\u7684\"a b\"\u548c\"c d\"\r\n             * \\cX          \u5339\u914dX\u6307\u5b9a\u7684ASCII\u63a7\u4ef6\u5b57\u7b26\uff0c\u5176\u4e2dX\u662f\u7a7a\u95f4\u5b57\u7b26\u7684\u5b57\u6bcd            \\cC          \"\\x0003\"\u4e2d\u7684\"\\x0003\"(Ctrl-C)\r\n             * \\unnnn       \u4f7f\u7528\u5341\u516d\u8fdb\u5236\u8868\u793a\u5f62\u5f0f\u5339\u914d\u4e00\u4e2aUnicode\u5b57\u7b26\uff08\u7531nnnn\u8868\u793a\u7684\u56db\u4f4d\u6570\uff09\u3002           \\w\\u0020\\w          \"a bc d\"\u4e2d\u7684\"a b\"\u548c\"c d\"\r\n             * \\            \u540e\u9762\u5e26\u6709\u4e0d\u8bc6\u522b\u7684\u8f6c\u4e49\u5b57\u7b26\u65f6\uff0c\u4e0e\u8be5\u5b57\u7b26\u5339\u914d\u3002           \\d+&#91;\\+-x\\*]\\d+          \"(2+2)*3*9\"\u4e2d\u7684\"2+2\"\u548c\"3*9\"\r\n             *\/\r\n            \/\/2.\u5b57\u7b26\u7c7b\r\n            \/*\r\n             * \u5b57\u7b26\u7c7b\u4e0e\u4e00\u7ec4\u5b57\u7b26\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\u5b57\u7b26\u5339\u914d\u3002\r\n             * \u5b57\u7b26\u7c7b          \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * &#91;character_group]            \u5339\u914dcharacter_group\u4e2d\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5339\u914d\u533a\u5206\u5927\u5c0f\u5199\u3002            &#91;mn]            \"mat\"\u4e2d\u7684m\uff0c\"moon\"\u4e2d\u7684\"m\"\u548c\"n\"\r\n             * &#91;^character_group]           \u975e\uff1a\u4e0e\u4e0d\u5728character_group\u4e2d\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\u5339\u914d\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0bcharacter_group\u4e2d\u7684\u5b57\u7b26\u5339\u914d\u5927\u5c0f\u5199            &#91;^aei]          \"avail\"\u4e2d\u7684\"v\"\u548c\"l\"\r\n             * &#91;first-last]         \u5b57\u7b26\u8303\u56f4\uff1a\u4e0e\u4ecefirst\u5230last\u7684\u8303\u56f4\u4e2d\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u5339\u914d           &#91;b-d]           &#91;b-d]irds\u53ef\u4ee5\u5339\u914dBirds\u3001Cirds\u3001Dirds\r\n             * .            \u901a\u914d\u7b26\uff1a\u4e0e\u9664\\n\u5916\u7684\u4efb\u610f\u5355\u4e2a\u5b57\u7b26\u5339\u914d\u3002\u82e5\u8981\u5339\u914d\u539f\u610f\u53e5\u70b9\u5b57\u7b26\uff08.\u6216\\u002E\uff09\uff0c\u60a8\u5fc5\u987b\u5728\u8be5\u5b57\u7b26\u524d\u9762\u52a0\u4e0a\u8f6c\u4e49\u7b26\uff08\\.\uff09          a.e             \"have\"\u4e2d\u7684ave\r\n             * \\p{name}         \u4e0ename\u6307\u5b9a\u7684Unicode\u901a\u7528\u7c7b\u522b\u6216\u547d\u540d\u5757\u4e2d\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u5339\u914d\u3002          \\p{Lu}          \"City Lights\"\u4e2d\u7684\"C\"\u548c\"L\"\r\n             * \\P{name}         \u4e0e\u4e0d\u5728name\u6307\u5b9a\u7684Unicode\u901a\u7528\u7c7b\u522b\u6216\u547d\u540d\u5757\u4e2d\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u5339\u914d\u3002           \\P{Lu}       \"City\"\u4e2d\u7684\"i\"\u3001\"t\"\u3001\"y\"\r\n             * \\w           \u4e0e\u4efb\u4f55\u5355\u8bcd\u5b57\u7b26\u5339\u914d           \\w          \"Room#1\"\u4e2d\u7684\"R\",\"o\",\"m\",\"1\"\r\n             * \\W           \u4e0e\u4efb\u4f55\u975e\u5355\u8bcd\u5b57\u7b26\u5339\u914d          \\W          \"Room#1\"\u4e2d\u7684\"#\"\r\n             * \\s           \u4e0e\u4efb\u4f55\u7a7a\u767d\u5b57\u7b26\u5339\u914d           \\w\\s            \"ID A1.3\"\u4e2d\u7684\"D \"\r\n             * \\S           \u4e0e\u4efb\u4f55\u975e\u7a7a\u767d\u5b57\u7b26\u5339\u914d          \\s\\S            \"int __ctr\"\u4e2d\u7684\" _\"\r\n             * \\d           \u4e0e\u4efb\u4f55\u5341\u8fdb\u5236\u6570\u5b57\u5339\u914d          \\d          \"4 = IV\"\u4e2d\u7684\"4\"\r\n             * \\D           \u5339\u914d\u4e0d\u662f\u5341\u8fdb\u5236\u6570\u7684\u4efb\u610f\u5b57\u7b26           \\D          \"4 = IV\"\u4e2d\u7684\" \"\u3001\"=\"\u3001\" \"\u3001\"I\"\u3001\"V\"\r\n             * \r\n             *\/\r\n            \/\/3.\u5b9a\u4f4d\u70b9\r\n            \/*\r\n             * \u5b9a\u4f4d\u70b9\u6216\u539f\u5b50\u96f6\u5bbd\u5ea6\u65ad\u8a00\u4f1a\u4f7f\u5339\u914d\u6210\u529f\u6216\u5931\u8d25\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u5b57\u7b26\u4e32\u4e2d\u7684\u5f53\u524d\u4f4d\u7f6e\uff0c\u4f46\u5b83\u4eec\u4e0d\u4f1a\u4f7f\u5f15\u64ce\u5728\u5b57\u7b26\u4e32\u4e2d\u524d\u8fdb\u6216\u4f7f\u7528\u5b57\u7b26\r\n             * \u65ad\u8a00           \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * ^            \u5339\u914d\u5fc5\u987b\u4ece\u5b57\u7b26\u4e32\u6216\u4e00\u884c\u7684\u5f00\u5934\u5f00\u59cb            ^\\d{3}          \"567-777-\"\u4e2d\u7684\"567\"\r\n             * $            \u5339\u914d\u5fc5\u987b\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u7684\u672b\u5c3e\u6216\u51fa\u73b0\u5728\u884c\u6216\u5b57\u7b26\u4e32\u672b\u5c3e\u7684\\n\u4e4b\u524d           -\\d{4}$         \"8-12-2012\"\u4e2d\u7684\"-2012\"\r\n             * \\A           \u5339\u914d\u5fc5\u987b\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u7684\u5f00\u5934           \\A\\w{4}         \"Code-007-\"\u4e2d\u7684\"Code\"\r\n             * \\Z           \u5339\u914d\u5fc5\u987b\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u7684\u672b\u5c3e\u6216\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u672b\u5c3e\u7684\\n\u4e4b\u524d         -\\d{3}\\Z            \"Bond-901-007\"\u4e2d\u7684\"-007\"\r\n             * \\z           \u5339\u914d\u5fc5\u987b\u51fa\u73b0\u5728\u5b57\u7b26\u4e32\u7684\u672b\u5c3e           -\\d{3}\\z            \"-901-333\"\u4e2d\u7684\"-333\"\r\n             * \\G           \u5339\u914d\u5fc5\u987b\u51fa\u73b0\u5728\u4e0a\u4e00\u4e2a\u5339\u914d\u7ed3\u675f\u7684\u5730\u65b9           \\G\\(\\d\\)            \"(1)(3)(5)&#91;7](9)\"\u4e2d\u7684\"(1)\"\u3001\"(3)\"\u3001\"(5)\"\r\n             * \\B           \u5339\u914d\u975e\u5355\u8bcd\u8fb9\u754c         er\\B            \u5339\u914d\"verb\"\u4e2d\u7684\"er\"\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\"never\"\u4e2d\u7684\"er\"\r\n             *\/\r\n            \/\/4.\u5206\u7ec4\u6784\u9020\r\n            \/*\r\n             * \u5206\u7ec4\u6784\u9020\u63cf\u8ff0\u4e86\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5b50\u8868\u8fbe\u5f0f\uff0c\u901a\u5e38\u7528\u4e8e\u6355\u83b7\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u5b50\u5b57\u7b26\u4e32\r\n             * \u5206\u7ec4\u6784\u9020         \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * ( subexpression  )           \u6355\u83b7\u5339\u914d\u7684\u5b50\u8868\u8fbe\u5f0f\u5e76\u5c06\u5176\u5206\u914d\u5230\u4e00\u4e2a\u4ece0\u5f00\u59cb\u7684\u5e8f\u53f7\u4e2d           (\\w)\\1          \"deep\"\u4e2d\u7684\"ee\"\r\n             * (?&lt;name> subexpression)          \u5c06\u5339\u914d\u7684\u5b50\u8868\u8fbe\u5f0f\u6355\u83b7\u5230\u4e00\u4e2a\u547d\u540d\u7ec4\u4e2d           (?&lt;double>\\w)\\k&lt;double>         \"deep\"\u4e2d\u7684\"ee\"\r\n             * (?&lt;name1 - name2>subexpression)          \u5b9a\u4e49\u5e73\u8861\u7ec4\u5b9a\u4e49         (((?'Open'\\()&#91;^\\(\\)]*)+((?'Close-Open'\\))&#91;^\\(\\)]*)+)*(?(Open)(?!))$         \"3+2^((1-3)*(3-1))\"\u4e2d\u7684\"((1-3)*(3-1))\"\r\n             * (?: subexpression)           \u5b9a\u4e49\u975e\u6355\u83b7\u7ec4          Write(?:Line)?          \"Console.WriteLine()\"\u4e2d\u7684\"WriteLine\"\r\n             * (?imnsx-imnsx:subexpression)         \u5e94\u7528\u6216\u7981\u7528subexpression\u4e2d\u6307\u5b9a\u7684\u9009\u9879            A\\d{2}(?i:\\w+)\\b            \"A12xl A12XL a12xl\"\u4e2d\u7684\"A12xl\"\u548c\"A12XL\"\r\n             * (?= subexpression)           \u96f6\u5bbd\u5ea6\u6b63\u9884\u6d4b          \\w+(?=\\.)           \"He is.The dog ran.The sun is out.\"\u4e2d\u7684\"is\"\u3001\"ran\"\u548c\"out\"    \u5fc5\u987b\u662f.\u7ed3\u5c3e\r\n             * (?! subexpression)           \u96f6\u5bbd\u5ea6\u8d1f\u9884\u6d4b          \\b(?!un)\\w+\\b           \"unsure sure unity used\"\u4e2d\u7684\"sure\"\u548c\"used\"  \u4e0d\u80fd\u662fun\u5f00\u5934\r\n             * (?&lt;=subexpression)           \u96f6\u5bbd\u5ea6\u6b63\u56de\u987e\u540e\u53d1\u65ad\u8a00          (?&lt;=19)\\d{2}\\b          \"1851 1999 1950 1905 2003\"\u4e2d\u7684\"99\"\u3001\"50\"\u548c\"05\"   \u5fc5\u987b\u662f19\u5f00\u5934\r\n             * (?&lt;! subexpression)          \u96f6\u5bbd\u5ea6\u8d1f\u56de\u987e\u540e\u53d1\u65ad\u8a00          (?&lt;!wo)man\\b            \"Hi woman Hi man\"\u4e2d\u7684\"man\"   \u4e0d\u80fd\u662fwo\u5f00\u5934\r\n             * (?> subexpression)           \u975e\u56de\u6eaf\uff08\u4e5f\u79f0\u4e3a\u201c\u8d2a\u5a6a\u201d\uff09\u5b50\u8868\u8fbe\u5f0f            &#91;13579](?>A+B+)         \"1ABB 3ABBC 5AB 5AC\"\u4e2d\u7684\"1ABB\"\u3001\"3ABB\"\u3001\"5AB\"\r\n             * \r\n             *\/\r\n            string input1 = \"1851 1999 1950 1905 2003\";\r\n            string pattern1 = @\"(?&lt;=19)\\d{2}\\b\";\r\n            foreach (Match match in Regex.Matches(input1, pattern1))\r\n                Console.WriteLine(match.Value);\r\n            \/\/5.\u9650\u5b9a\u7b26\r\n            \/*\r\n             * \u9650\u5b9a\u7b26\u6307\u5b9a\u5728\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u5fc5\u987b\u5b58\u5728\u4e0a\u4e00\u4e2a\u5143\u7d20\uff08\u53ef\u4ee5\u662f\u5b57\u7b26\u3001\u7ec4\u6216\u5b57\u7b26\u7c7b\uff09\u7684\u591a\u5c11\u4e2a\u5b9e\u4f8b\u624d\u80fd\u51fa\u73b0\u5339\u914d\u9879\u3002\u9650\u5b9a\u7b26\u5305\u62ec\u4e0b\u8868\u4e2d\u5217\u51fa\u7684\u8bed\u8a00\u5143\u7d20\u3002\r\n             * \u9650\u5b9a\u7b26          \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * *            \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u96f6\u6b21\u6216\u591a\u6b21            \\d*\\.\\d         \".0\"\u3001\"19.9\"\u3001\"219.9\"\r\n             * +            \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u4e00\u6b21\u6216\u591a\u6b21            \"be+\"           \"been\"\u4e2d\u7684\"bee\"\uff0c\"bent\"\u4e2d\u7684\"be\"\r\n             * ?            \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u96f6\u6b21\u6216\u4e00\u6b21            \"rai?n\"         \"ran\"\u3001\"rain\"\r\n             * {n}          \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u6070\u597dn\u6b21                 \",\\d{3}\"            \"1,043.6\"\u4e2d\u7684\",043\"\uff0c\"9,876,543,210\"\u4e2d\u7684\",876\"\u3001\",543\"\u548c\",210\"\r\n             * {n,}         \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u81f3\u5c11n\u6b21                 \"\\d{2,}\"            \"166\"\u3001\"29\"\u3001\"1930\"\r\n             * {n,m}        \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u81f3\u5c11n\u6b21\uff0c\u4f46\u4e0d\u591a\u4e8em\u6b21         \"\\d{3,5}\"           \"166\"\u3001\"17668\"\uff0c\"193024\"\u4e2d\u7684\"19302\"\r\n             * *?           \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u96f6\u6b21\u6216\u591a\u6b21\uff0c\u4f46\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11            \\d*?\\.\\d            \".0\"\u3001\"19.9\"\u3001\"219.9\"\r\n             * +?           \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u4e00\u6b21\u6216\u591a\u6b21\uff0c\u4f46\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11            \"be+?\"          \"been\"\u4e2d\u7684\"be\"\u3001\"bent\"\u4e2d\u7684\"be\"\r\n             * ??           \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u96f6\u6b21\u6216\u4e00\u6b21\uff0c\u4f46\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11            \"rai??n\"            \"ran\"\u3001\"rain\"\r\n             * {n}?         \u5339\u914d\u524d\u5bfc\u5143\u7d20\u6070\u597dn\u6b21             \",\\d{3}?\"            \"1,043.6\"\u4e2d\u7684\",043\"\uff0c\"9,876,543,210\"\u4e2d\u7684\",876\"\u3001\",543\"\u3001\",210\"\r\n             * {n,}?        \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u81f3\u5c11n\u6b21\uff0c\u4f46\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11\u3002            \"\\d{2,}?\"           \"166\"\u3001\"29\"\u3001\"1930\"\r\n             * {n,m}?       \u5339\u914d\u4e0a\u4e00\u4e2a\u5143\u7d20\u7684\u6b21\u6570\u4ecb\u4e8en\u548cm\u4e4b\u95f4\uff0c\u4f46\u6b21\u6570\u5c3d\u53ef\u80fd\u5c11\u3002          \"\\d{3,5}?\"          \"166\"\u3001\"17668\"\u3001\"193024\"\u4e2d\u7684\"193\"\u548c\"024\"\r\n             * \r\n             *\/\r\n            \/\/6.\u53cd\u5411\u5f15\u7528\u6784\u9020\r\n            \/*\r\n             * \u53cd\u5411\u5f15\u7528\u5141\u8bb8\u5728\u540c\u4e00\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u968f\u540e\u6807\u8bc6\u4ee5\u524d\u5339\u914d\u7684\u5b50\u8868\u8fbe\u5f0f\u3002\r\n             * \u53cd\u5411\u5f15\u7528\u6784\u9020           \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * \\number          \u53cd\u5411\u5f15\u7528\u3002\u5339\u914d\u7f16\u53f7\u5b50\u8868\u8fbe\u5f0f\u7684\u503c             (\\w)\\1          \"seek\"\u4e2d\u7684\"ee\"   \\1 matches the same text as most recently matched by the 1st capturing group\r\n             * \\k&lt;number>       \u547d\u540d\u53cd\u5411\u5f15\u7528\u3002\u5339\u914d\u547d\u540d\u8868\u8fbe\u5f0f\u7684\u503c\u3002           (?&lt;char>\\w)\\k&lt;char>         \"seek\"\u4e2d\u7684\"ee\"   \\k&lt;char>\u5339\u914d\u547d\u540d\u6355\u83b7\u7ec4\r\n             * \r\n             *\/\r\n            \/\/7.\u5907\u7528\u6784\u9020\r\n            \/*\u5907\u7528\u6784\u9020\u7528\u4e8e\u4fee\u6539\u6b63\u5219\u8868\u8fbe\u5f0f\u4ee5\u542f\u7528either\/or\u5339\u914d\r\n             * \u5907\u7528\u6784\u9020             \u63cf\u8ff0          \u6a21\u5f0f          \u5339\u914d\r\n             * |            \u5339\u914d\u4ee5\u7ad6\u7ebf(|)\u5b57\u7b26\u5206\u9694\u7684\u4efb\u4f55\u4e00\u4e2a\u5143\u7d20         th(e|is|at)         \"this is the day.\"\u4e2d\u7684\"the\"\u548c\"this\"\r\n             * (?(expression)yes|no)            \u5982\u679c\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u7531expression\u5339\u914d\u6307\u5b9a\uff0c\u5219\u5339\u914dyes\uff1b\u5426\u5219\u5339\u914d\u53ef\u9009\u7684no\u90e8\u5206\u3002expression\u88ab\u89e3\u91ca\u4e3a\u96f6\u5bbd\u5ea6\u65ad\u8a00         (?(A)A\\d{2}\\b|\\b\\d{3}\\b)            \"A10 C103 910\"\u4e2d\u7684\"A10\"\u548c\"910\"\r\n             * (?(name)yes|no))         \u5982\u679cname\u6216\u5df2\u547d\u540d\u6216\u5df2\u7f16\u53f7\u7684\u6355\u83b7\u7ec4\u5177\u6709\u5339\u914d\uff0c\u5219\u5339\u914dyes\uff1b\u5426\u5219\u5339\u914d\u53ef\u9009\u7684no\u3002            (?&lt;quoted>\")?(?(quoted).+?\"|\\S+\\s)          \"Dogs.jpg\"Yiska playing.jpg\"\"\u4e2d\u7684Dogs.jpg\u548c\"Yiska playing.jpg\"\r\n             *\/\r\n            \/\/8.\u66ff\u6362\r\n            \/*\r\n             * \u66ff\u6362\u662f\u66ff\u6362\u6a21\u5f0f\u4e2d\u4f7f\u7528\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\r\n             * \u5b57\u7b26           \u63cf\u8ff0          \u6a21\u5f0f          \u66ff\u6362\u6a21\u5f0f            \u8f93\u5165\u5b57\u7b26\u4e32           \u7ed3\u679c\u5b57\u7b26\u4e32\r\n             * $number          \u66ff\u6362\u6309\u7ec4number\u5339\u914d\u7684\u5b50\u5b57\u7b26\u4e32           \\b(\\w+)(\\s)(\\w+\\b)          $3$2$1          \"one two\"           \"two one\"\r\n             * ${name}          \u66ff\u6362\u6309\u547d\u540d\u7ec4name\u5339\u914d\u7684\u5b50\u5b57\u7b26\u4e32         \\b(?&lt;word1>\\w+)(\\s)(?&lt;word2>\\w+)\\b            ${word2}${word1}            \"one two\"           \"two one\"\r\n             * $$               \u66ff\u6362\u5b57\u7b26\"$\"         \\b(\\d+)\\s?USD      $$$1         \"103 USD\"           \"$103\"\r\n             * $&amp;               \u66ff\u6362\u6574\u4e2a\u5339\u914d\u9879\u7684\u4e00\u4e2a\u526f\u672c            (\\$*(\\d*(\\.+\\d+)?){1})          **$&amp;            \"$1.30\"         \"**$1.30**\"\r\n             * $`               \u66ff\u6362\u5339\u914d\u524d\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u6240\u6709\u6587\u672c            B+          $`          \"AABBCC\"            \"AAAAACC\"\r\n             * $'               \u66ff\u6362\u5339\u914d\u540e\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u6240\u6709\u6587\u672c            B+          $'          \"AABBCC\"            \"AACCCC\"\r\n             * $+               \u66ff\u6362\u6700\u540e\u6355\u83b7\u7684\u7ec4            B+(C+)          $+          \"AABBCCDD\"          \"AACCDD\"\r\n             * $_               \u66ff\u6362\u6574\u4e2a\u8f93\u5165\u5b57\u7b26\u4e32           B+              $_          \"AABBCC\"            \"AAAABBCCCC\"\r\n             *\/\r\n            \/\/9.\u6742\u9879\u6784\u9020\r\n            \/*\r\n             * \u6784\u9020           \u63cf\u8ff0          \u5b9e\u4f8b\r\n             * (?imnsx-imnsx)           \u5728\u6a21\u5f0f\u4e2d\u95f4\u5bf9\u8bf8\u5982\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u8fd9\u6837\u7684\u9009\u9879\u8fdb\u884c\u8bbe\u7f6e\u6216\u7981\u7528          \\bA(?i)b\\w+\\b\u5339\u914d\"ABA Able Act\"\u4e2d\u7684\"ABA\"\u548c\"Able\"\u3002\r\n             * (?#\u6ce8\u91ca)                   \u5185\u8054\u6ce8\u91ca\u3002\u8be5\u6ce8\u91ca\u5728\u7b2c\u4e00\u4e2a\u53f3\u62ec\u53f7\u5904\u7ec8\u6b62          \\bA(?#\u5339\u914d\u4ee5A\u5f00\u5934\u7684\u5355\u8bcd)\\w+\\b\r\n             * #&#91;\u884c\u5c3e]                    \u8be5\u6ce8\u91ca\u4ee5\u975e\u8f6c\u4e49\u7684#\u5f00\u5934\uff0c\u5e76\u7ee7\u7eed\u5230\u884c\u7684\u7ed3\u5c3e            (?x)\\bA\\w+\\b#\u5339\u914d\u4ee5A\u5f00\u5934\u7684\u5355\u8bcd\r\n             *\/\r\n\r\n            \/\/Regex\u7c7b\r\n            \/\/Regex\u7c7b\u7528\u4e8e\u8868\u793a\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\r\n            \/*\r\n             * Regex\u7c7b\u4e2d\u5e38\u7528\u65b9\u6cd5\r\n             * public bool IsMatch(string input)   \u6307\u793aRegex\u6784\u9020\u51fd\u6570\u4e2d\u6307\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u5728\u6307\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u627e\u5230\u5339\u914d\u9879\r\n             * public bool IsMatch(string input, int startat)   \u6307\u793aRegex\u6784\u9020\u51fd\u6570\u4e2d\u6307\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u5728\u6307\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u627e\u5230\u5339\u914d\u9879\uff0c\u4ece\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u7684\u5f00\u59cb\u4f4d\u7f6e\u5f00\u59cb\u3002\r\n             * public static bool IsMatch(string input, string pattern)   \u6307\u793a\u6307\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5426\u5728\u6307\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u627e\u5230\u5339\u914d\u9879\r\n             * public MatchCollection Matches(string input)   \u5728\u6307\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u641c\u7d22\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6240\u6709\u5339\u914d\u9879\r\n             * public string Replace(string input, string replacement)   \u5728\u6307\u5b9a\u7684\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\uff0c\u628a\u6240\u6709\u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u7684\u6240\u6709\u5339\u914d\u7684\u5b57\u7b26\u4e32\u66ff\u6362\u4e3a\u6307\u5b9a\u7684\u66ff\u6362\u5b57\u7b26\u4e32\r\n             * public string&#91;] Split(string input)   \u628a\u8f93\u5165\u5b57\u7b26\u4e32\u5206\u5272\u4e3a\u5b50\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u6839\u636e\u5728Regex\u6784\u9020\u51fd\u6570\u4e2d\u6307\u5b9a\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u5b9a\u4e49\u7684\u4f4d\u7f6e\u8fdb\u884c\u5206\u5272\u3002\r\n             *\/\r\n\r\n            \/\/\u5b9e\u4f8b1\uff1a\u5339\u914d\u4ee5S\u5f00\u5934\u7684\u5355\u8bcd\r\n            string str1 = \"A Thousand Splendid Suns\";\r\n            Console.WriteLine(\"Matching words that start with 'S': \");\r\n            showMatch(str1, @\"\\bS\\S*\");\r\n\r\n            \/\/\u5b9e\u4f8b2\uff1a\u5339\u914d\u4ee5m\u5f00\u5934\u4ee5e\u7ed3\u5c3e\u7684\u5355\u8bcd\r\n            string str2 = \"make maze and manage to measure it\";\r\n            Console.WriteLine(\"Matching words start with 'm' and ends with 'e';\");\r\n            showMatch(str2, @\"\\bm\\S*e\\b\");\r\n\r\n            \/\/\u5b9e\u4f8b3\uff1a\u66ff\u6362\u591a\u4f59\u7684\u7a7a\u683c\r\n            string input2 = \"Hello          World       \";\r\n            string pattern2 = \"\\\\s+\";\r\n            string replacement = \" \";\r\n            Regex rgx2 = new Regex(pattern2);\r\n            string result = rgx2.Replace(input2, replacement);\r\n            Console.WriteLine(\"Original String: {0}\", input2);\r\n            Console.WriteLine(\"Replacement String: {0}\", result);\r\n            Console.ReadKey();\r\n         }\r\n\r\n        private static void showMatch(string text, string expr)\r\n        {\r\n            Console.WriteLine(\"The Expression: \"+expr);\r\n            MatchCollection mc = Regex.Matches(text, expr);\r\n\r\n            foreach(Match m in mc)\r\n            {\r\n                Console.WriteLine(m);\r\n            }\r\n        }\r\n    }\r\n    \r\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/271"}],"collection":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=271"}],"version-history":[{"count":1,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/271\/revisions"}],"predecessor-version":[{"id":272,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=\/wp\/v2\/posts\/271\/revisions\/272"}],"wp:attachment":[{"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fengjijiao.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}