{"id":44374,"date":"2025-06-18T17:17:38","date_gmt":"2025-06-18T09:17:38","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/44374.html"},"modified":"2025-06-18T17:17:38","modified_gmt":"2025-06-18T09:17:38","slug":"%e5%a6%82%e4%bd%95%e8%ae%be%e8%ae%a1%e4%b8%80%e4%b8%aa%e6%95%8f%e6%84%9f%e8%af%8d%e8%bf%87%e6%bb%a4%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/44374.html","title":{"rendered":"\u5982\u4f55\u8bbe\u8ba1\u4e00\u4e2a\u654f\u611f\u8bcd\u8fc7\u6ee4\u7cfb\u7edf"},"content":{"rendered":"<p>\u5728Java\u9879\u76ee\u4e2d&#xff0c;\u8bbe\u8ba1\u4e00\u4e2a\u654f\u611f\u8bcd\u8fc7\u6ee4\u7cfb\u7edf\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c&#xff1a;<\/p>\n<li>\u654f\u611f\u8bcd\u7684\u5b58\u50a8&#xff1a;\u654f\u611f\u8bcd\u53ef\u4ee5\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d&#xff0c;\u4e5f\u53ef\u4ee5\u5b58\u50a8\u5728\u5185\u5b58\u4e2d\u7684\u96c6\u5408&#xff08;\u5982HashSet&#xff09;\u4e2d&#xff0c;\u4fbf\u4e8e\u5feb\u901f\u67e5\u627e\u3002<\/li>\n<li>\u6570\u636e\u7ed3\u6784\u7684\u9009\u62e9&#xff1a;\u4e3a\u63d0\u9ad8\u6548\u7387&#xff0c;\u53ef\u4ee5\u4f7f\u7528 Trie&#xff08;\u524d\u7f00\u6811&#xff09; \u6570\u636e\u7ed3\u6784\u6765\u5b58\u50a8\u654f\u611f\u8bcd&#xff0c;\u56e0\u4e3a\u5b83\u80fd\u591f\u9ad8\u6548\u5730\u8fdb\u884c\u524d\u7f00\u5339\u914d\u3002<\/li>\n<li>\u8fc7\u6ee4\u8fc7\u7a0b&#xff1a;\u5728\u8fc7\u6ee4\u65f6&#xff0c;\u901a\u8fc7\u9010\u5b57\u7b26\u904d\u5386\u6587\u672c&#xff0c;\u4f7f\u7528Trie\u6811\u6765\u67e5\u627e\u5e76\u66ff\u6362\u654f\u611f\u8bcd\u3002<\/li>\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u654f\u611f\u8bcd\u8fc7\u6ee4\u7cfb\u7edf\u7684\u5b9e\u73b0&#xff1a;<\/p>\n<h5>1. Trie&#xff08;\u524d\u7f00\u6811&#xff09;\u6570\u636e\u7ed3\u6784<\/h5>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">HashMap<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token import\"><span class=\"token namespace\">java<span class=\"token punctuation\">.<\/span>util<span class=\"token punctuation\">.<\/span><\/span><span class=\"token class-name\">Map<\/span><\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">TrieNode<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token class-name\">Map<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token class-name\">Character<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">TrieNode<\/span><span class=\"token punctuation\">&gt;<\/span><\/span> children <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">HashMap<\/span><span class=\"token generics\"><span class=\"token punctuation\">&lt;<\/span><span class=\"token punctuation\">&gt;<\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">boolean<\/span> isEndOfWord <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SensitiveWordFilter<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token class-name\">TrieNode<\/span> root<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">SensitiveWordFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        root <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">TrieNode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u63d2\u5165\u654f\u611f\u8bcd\u5230 Trie \u6811<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">addSensitiveWord<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> word<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">TrieNode<\/span> currentNode <span class=\"token operator\">&#061;<\/span> root<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> c <span class=\"token operator\">:<\/span> word<span class=\"token punctuation\">.<\/span><span class=\"token function\">toCharArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            currentNode <span class=\"token operator\">&#061;<\/span> currentNode<span class=\"token punctuation\">.<\/span>children<span class=\"token punctuation\">.<\/span><span class=\"token function\">computeIfAbsent<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">,<\/span> k <span class=\"token operator\">-&gt;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">TrieNode<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        currentNode<span class=\"token punctuation\">.<\/span>isEndOfWord <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u662f\u5426\u662f\u654f\u611f\u8bcd\u7684\u5f00\u59cb\u5b57\u7b26<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">containsSensitiveWord<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> text<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">TrieNode<\/span> currentNode <span class=\"token operator\">&#061;<\/span> root<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> c <span class=\"token operator\">:<\/span> text<span class=\"token punctuation\">.<\/span><span class=\"token function\">toCharArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            currentNode <span class=\"token operator\">&#061;<\/span> currentNode<span class=\"token punctuation\">.<\/span>children<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>c<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>currentNode <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token keyword\">null<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>currentNode<span class=\"token punctuation\">.<\/span>isEndOfWord<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u8fc7\u6ee4\u6587\u672c\u4e2d\u7684\u654f\u611f\u8bcd<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token class-name\">String<\/span> <span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span> input<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">StringBuilder<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">StringBuilder<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> start <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>start <span class=\"token operator\">&lt;<\/span> input<span class=\"token punctuation\">.<\/span><span class=\"token function\">length<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token class-name\">TrieNode<\/span> currentNode <span class=\"token operator\">&#061;<\/span> root<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> end <span class=\"token operator\">&#061;<\/span> start<span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>end <span class=\"token operator\">&lt;<\/span> input<span class=\"token punctuation\">.<\/span><span class=\"token function\">length<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> currentNode<span class=\"token punctuation\">.<\/span>children<span class=\"token punctuation\">.<\/span><span class=\"token function\">containsKey<\/span><span class=\"token punctuation\">(<\/span>input<span class=\"token punctuation\">.<\/span><span class=\"token function\">charAt<\/span><span class=\"token punctuation\">(<\/span>end<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                currentNode <span class=\"token operator\">&#061;<\/span> currentNode<span class=\"token punctuation\">.<\/span>children<span class=\"token punctuation\">.<\/span><span class=\"token function\">get<\/span><span class=\"token punctuation\">(<\/span>input<span class=\"token punctuation\">.<\/span><span class=\"token function\">charAt<\/span><span class=\"token punctuation\">(<\/span>end<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                end<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>currentNode<span class=\"token punctuation\">.<\/span>isEndOfWord<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token keyword\">break<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><\/p>\n<p>            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>end <span class=\"token operator\">&gt;<\/span> start<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                result<span class=\"token punctuation\">.<\/span><span class=\"token function\">append<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;***&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5982\u679c\u5339\u914d\u5230\u654f\u611f\u8bcd&#xff0c;\u66ff\u6362\u4e3a ***<\/span><br \/>\n                start <span class=\"token operator\">&#061;<\/span> end<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8df3\u8fc7\u5df2\u5339\u914d\u7684\u654f\u611f\u8bcd<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n                result<span class=\"token punctuation\">.<\/span><span class=\"token function\">append<\/span><span class=\"token punctuation\">(<\/span>input<span class=\"token punctuation\">.<\/span><span class=\"token function\">charAt<\/span><span class=\"token punctuation\">(<\/span>start<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                start<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2. \u4f7f\u7528\u654f\u611f\u8bcd\u8fc7\u6ee4\u7cfb\u7edf<\/h5>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Main<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">String<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token class-name\">SensitiveWordFilter<\/span> filter <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">SensitiveWordFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6dfb\u52a0\u654f\u611f\u8bcd<\/span><br \/>\n        filter<span class=\"token punctuation\">.<\/span><span class=\"token function\">addSensitiveWord<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u654f\u611f\u8bcd&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        filter<span class=\"token punctuation\">.<\/span><span class=\"token function\">addSensitiveWord<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u7981\u6b62&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6d4b\u8bd5\u8fc7\u6ee4\u529f\u80fd<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> text <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;\u8fd9\u662f\u4e00\u4e2a\u5305\u542b\u654f\u611f\u8bcd\u7684\u6587\u672c&#xff0c;\u9700\u8981\u7981\u6b62\u67d0\u4e9b\u8bcd\u6c47&#034;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6253\u5370\u8fc7\u6ee4\u540e\u7684\u6587\u672c<\/span><br \/>\n        <span class=\"token class-name\">String<\/span> result <span class=\"token operator\">&#061;<\/span> filter<span class=\"token punctuation\">.<\/span><span class=\"token function\">filter<\/span><span class=\"token punctuation\">(<\/span>text<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token class-name\">System<\/span><span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u8fc7\u6ee4\u540e\u7684\u6587\u672c: &#034;<\/span> <span class=\"token operator\">&#043;<\/span> result<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>\u89e3\u91ca<\/h4>\n<li>TrieNode \u7c7b&#xff1a;\n<ul>\n<li>children&#xff1a;\u5b58\u50a8\u6bcf\u4e2a\u5b57\u7b26\u7684\u5b50\u8282\u70b9\u3002<\/li>\n<li>isEndOfWord&#xff1a;\u6807\u8bb0\u8be5\u8282\u70b9\u662f\u5426\u662f\u4e00\u4e2a\u654f\u611f\u8bcd\u7684\u7ed3\u5c3e\u3002<\/li>\n<\/ul>\n<\/li>\n<li>SensitiveWordFilter 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