{"id":433,"date":"2021-03-11T16:07:52","date_gmt":"2021-03-11T08:07:52","guid":{"rendered":"\/?p=433"},"modified":"2021-03-11T16:07:52","modified_gmt":"2021-03-11T08:07:52","slug":"5-2%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%9a%84%e6%9f%a5%e6%89%be","status":"publish","type":"post","link":"http:\/\/xinblog.ltd\/?p=433","title":{"rendered":"5.2\u5b57\u7b26\u4e32\u7684\u67e5\u627e"},"content":{"rendered":"<p>\u5bf9\u4e8e\u5b57\u7b26\u4e32\u67e5\u627e\u4f7f\u7528\u7684\u7b97\u6cd5,<\/p>\n<p>\u67e5\u627e\u547d\u4e2d\u6240\u9700\u7684\u65f6\u95f4\u4e8e\u88ab\u67e5\u627e\u7684\u952e\u7684\u957f\u5ea6\u6210\u6b63\u6bd4<\/p>\n<p>\u67e5\u627e\u672a\u547d\u4e2d\u53ea\u9700\u8981\u68c0\u67e5\u51e0\u4e2a\u5b57\u7b26<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" width=\"742\" height=\"323\" src=\"\/wp-content\/uploads\/2021\/03\/unnamed-file-197.png\" class=\"wp-image-434\" alt=\"\u56fe\u7247\" srcset=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2021\/03\/unnamed-file-197.png 742w, http:\/\/xinblog.ltd\/wp-content\/uploads\/2021\/03\/unnamed-file-197-300x131.png 300w\" sizes=\"(max-width: 742px) 100vw, 742px\" \/><\/p>\n<p>\u5176\u4e2dlongestPrefixOf(String s) 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decoding=\"async\" loading=\"lazy\" width=\"658\" height=\"616\" src=\"\/wp-content\/uploads\/2021\/03\/unnamed-file-198.png\" class=\"wp-image-435\" alt=\"\u56fe\u7247\" srcset=\"http:\/\/xinblog.ltd\/wp-content\/uploads\/2021\/03\/unnamed-file-198.png 658w, http:\/\/xinblog.ltd\/wp-content\/uploads\/2021\/03\/unnamed-file-198-300x281.png 300w\" sizes=\"(max-width: 658px) 100vw, 658px\" 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root;<\/p>\n<p>private static class Node{<\/p>\n<p>private Object val;\/\/\u8bbe\u7f6e\u4fdd\u5b58\u7684\u503c<\/p>\n<p>private Node[]next = new Node[R];\/\/\u4e0b\u4e00\u4e2a\u7ed3\u70b9\u4e5f\u662f\u4e00\u4e2a\u6570\u7ec4<\/p>\n<p>}<\/p>\n<p>\u7136\u540e\u662fget\u65b9\u6cd5<\/p>\n<p>public Value get(String key) {<\/p>\n<p>Node x =get(root, key, 0);<\/p>\n<p>if (x == null)<\/p>\n<p>return null;<\/p>\n<p>return (Value)x.val;<\/p>\n<p>}<\/p>\n<p>private Node get(Node x,String key ,int id) {<\/p>\n<p>if(x == null)<\/p>\n<p>return null;\/\/\u4e0d\u5b58\u5728\u76f4\u63a5\u8fd4\u56de<\/p>\n<p>if(id == key.length()) {<\/p>\n<p>return x;<\/p>\n<p>}<\/p>\n<p>char temp = key.charAt(id);\/\/\u83b7\u53d6\u5b57\u7b26<\/p>\n<p>return get(x.next[temp], key, id+1);\/\/\u67e5\u627e\u4e0b\u4e00\u7c07<\/p>\n<p>}<\/p>\n<p>\u5bf9\u5e94\u7684put\u5982\u4e0b<\/p>\n<p>public void put(String key,Value val) {<\/p>\n<p>root = put(root, key, val, 0);<\/p>\n<p>}<\/p>\n<p>public Node put(Node x,String key,Value 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