{"id":1334,"date":"2022-07-22T09:38:22","date_gmt":"2022-07-22T01:38:22","guid":{"rendered":"https:\/\/sanlangcode.com\/?p=1334"},"modified":"2022-07-22T09:38:22","modified_gmt":"2022-07-22T01:38:22","slug":"treemap%e7%9a%84%e4%bd%bf%e7%94%a8%e5%92%8c%e5%ba%95%e5%b1%82%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/sanlangcode.com\/index.php\/2022\/07\/22\/treemap%e7%9a%84%e4%bd%bf%e7%94%a8%e5%92%8c%e5%ba%95%e5%b1%82%e5%ae%9e%e7%8e%b0\/","title":{"rendered":"TreeMap\u7684\u4f7f\u7528\u548c\u5e95\u5c42\u5b9e\u73b0"},"content":{"rendered":"\n

TreeMap\u662f\u7ea2\u9ed1\u4e8c\u53c9\u6811\u7684\u5178\u578b\u5b9e\u73b0\u3002\u6211\u4eec\u6253\u5f00TreeMap\u7684\u6e90\u7801\uff0c\u53d1\u73b0\u91cc\u9762\u6709\u4e00\u884c\u6838\u5fc3\u4ee3\u7801\uff1a<\/p>\n\n\n\n

1<\/td>private<\/code> transient<\/code> Entry<K,V> root = <\/code>null<\/code>;<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u00a0 \u00a0 \u00a0\u00a0root\u7528\u6765\u5b58\u50a8\u6574\u4e2a\u6811\u7684\u6839\u8282\u70b9\u3002\u6211\u4eec\u7ee7\u7eed\u8ddf\u8e2aEntry(\u662fTreeMap\u7684\u5185\u90e8\u7c7b)\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n

\"\u56fe9-23<\/figure>\n\n\n\n

      \u53ef\u4ee5\u770b\u5230\u91cc\u9762\u5b58\u50a8\u4e86\u672c\u8eab\u6570\u636e\u3001\u5de6\u8282\u70b9\u3001\u53f3\u8282\u70b9\u3001\u7236\u8282\u70b9\u3001\u4ee5\u53ca\u8282\u70b9\u989c\u8272\u3002 TreeMap\u7684put()\/remove()\u65b9\u6cd5\u5927\u91cf\u4f7f\u7528\u4e86\u7ea2\u9ed1\u6811\u7684\u7406\u8bba\u3002\u672c\u4e66\u9650\u4e8e\u7bc7\u5e45\uff0c\u4e0d\u518d\u5c55\u5f00\u3002\u9700\u8981\u4e86\u89e3\u66f4\u6df1\u5165\u7684\uff0c\u53ef\u4ee5\u53c2\u8003\u4e13\u95e8\u7684\u6570\u636e\u7ed3\u6784\u4e66\u7c4d\u3002<\/p>\n\n\n\n

\u00a0 \u00a0 \u00a0\u00a0TreeMap\u548cHashMap\u5b9e\u73b0\u4e86\u540c\u6837\u7684\u63a5\u53e3Map\uff0c\u56e0\u6b64\uff0c\u7528\u6cd5\u5bf9\u4e8e\u8c03\u7528\u8005\u6765\u8bf4\u6ca1\u6709\u533a\u522b\u3002HashMap\u6548\u7387\u9ad8\u4e8eTreeMap;\u5728\u9700\u8981\u6392\u5e8f\u7684Map\u65f6\u624d\u9009\u7528TreeMap\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u4e8c\u53c9\u6811\u7684\u5b9a\u4e49<\/strong><\/p>\n\n\n\n

      \u4e8c\u53c9\u6811\u662f\u6811\u5f62\u7ed3\u6784\u7684\u4e00\u4e2a\u91cd\u8981\u7c7b\u578b\u3002 \u8bb8\u591a\u5b9e\u9645\u95ee\u9898\u62bd\u8c61\u51fa\u6765\u7684\u6570\u636e\u7ed3\u6784\u5f80\u5f80\u662f\u4e8c\u53c9\u6811\u7684\u5f62\u5f0f\uff0c\u5373\u4f7f\u662f\u4e00\u822c\u7684\u6811\u4e5f\u80fd\u7b80\u5355\u5730\u8f6c\u6362\u4e3a\u4e8c\u53c9\u6811\uff0c\u800c\u4e14\u4e8c\u53c9\u6811\u7684\u5b58\u50a8\u7ed3\u6784\u53ca\u5176\u7b97\u6cd5\u90fd\u8f83\u4e3a\u7b80\u5355\uff0c\u56e0\u6b64\u4e8c\u53c9\u6811\u663e\u5f97\u7279\u522b\u91cd\u8981\u3002<\/p>\n\n\n\n

      \u4e8c\u53c9\u6811(BinaryTree)\u7531\u4e00\u4e2a\u8282\u70b9\u53ca\u4e24\u68f5\u4e92\u4e0d\u76f8\u4ea4\u7684\u3001\u5206\u522b\u79f0\u4f5c\u8fd9\u4e2a\u6839\u7684\u5de6\u5b50\u6811\u548c\u53f3\u5b50\u6811\u7684\u4e8c\u53c9\u6811\u7ec4\u6210\u3002\u4e0b\u56fe\u4e2d\u5c55\u73b0\u4e86\u4e94\u79cd\u4e0d\u540c\u57fa\u672c\u5f62\u6001\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

\"\u56fe9-18<\/figure>\n\n\n\n

      (a) \u4e3a\u7a7a\u6811\u3002<\/p>\n\n\n\n

      (b) \u4e3a\u4ec5\u6709\u4e00\u4e2a\u7ed3\u70b9\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

      (c) \u662f\u4ec5\u6709\u5de6\u5b50\u6811\u800c\u53f3\u5b50\u6811\u4e3a\u7a7a\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

      (d) \u662f\u4ec5\u6709\u53f3\u5b50\u6811\u800c\u5de6\u5b50\u6811\u4e3a\u7a7a\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

      (e) \u662f\u5de6\u3001\u53f3\u5b50\u6811\u5747\u975e\u7a7a\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n\n\n\n

      \u4e8c\u53c9\u6811\u7684\u5de6\u5b50\u6811\u548c\u53f3\u5b50\u6811\u662f\u4e25\u683c\u533a\u5206\u5e76\u4e14\u4e0d\u80fd\u968f\u610f\u98a0\u5012\u7684\uff0c\u56fe (c) \u4e0e\u56fe (d) \u5c31\u662f\u4e24\u68f5\u4e0d\u540c\u7684\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

\u6392\u5e8f\u4e8c\u53c9\u6811\u7279\u6027\u5982\u4e0b\uff1a<\/strong><\/p>\n\n\n\n

      (1) \u5de6\u5b50\u6811\u4e0a\u6240\u6709\u8282\u70b9\u7684\u503c\u5747\u5c0f\u4e8e\u5b83\u7684\u6839\u8282\u70b9\u7684\u503c\u3002<\/p>\n\n\n\n

      (2) \u53f3\u5b50\u6811\u4e0a\u6240\u6709\u8282\u70b9\u7684\u503c\u5747\u5927\u4e8e\u5b83\u7684\u6839\u8282\u70b9\u7684\u503c\u3002<\/p>\n\n\n\n

      \u6bd4\u5982\uff1a\u6211\u4eec\u8981\u5c06\u6570\u636e\u301014,12,23,4,16,13, 8,,3\u3011\u5b58\u50a8\u5230\u6392\u5e8f\u4e8c\u53c9\u6811\u4e2d\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n

\"\u56fe9-19<\/figure>\n\n\n\n

      \u6392\u5e8f\u4e8c\u53c9\u6811\u672c\u8eab\u5b9e\u73b0\u4e86\u6392\u5e8f\u529f\u80fd\uff0c\u53ef\u4ee5\u5feb\u901f\u68c0\u7d22\u3002\u4f46\u5982\u679c\u63d2\u5165\u7684\u8282\u70b9\u96c6\u672c\u8eab\u5c31\u662f\u6709\u5e8f\u7684\uff0c\u8981\u4e48\u662f\u7531\u5c0f\u5230\u5927\u6392\u5217\uff0c\u8981\u4e48\u662f\u7531\u5927\u5230\u5c0f\u6392\u5217\uff0c\u90a3\u4e48\u6700\u540e\u5f97\u5230\u7684\u6392\u5e8f\u4e8c\u53c9\u6811\u5c06\u53d8\u6210\u666e\u901a\u7684\u94fe\u8868\uff0c\u5176\u68c0\u7d22\u6548\u7387\u5c31\u4f1a\u5f88\u5dee\u3002 \u6bd4\u5982\u4e0a\u9762\u7684\u6570\u636e\u301014,12,23,4,16,13, 8,,3\u3011\uff0c\u6211\u4eec\u5148\u8fdb\u884c\u6392\u5e8f\u53d8\u6210\uff1a\u30103,4,8,12,13,14,16,23\u3011\uff0c\u7136\u540e\u5b58\u50a8\u5230\u6392\u5e8f\u4e8c\u53c9\u6811\u4e2d\uff0c\u663e\u7136\u5c31\u53d8\u6210\u4e86\u94fe\u8868\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n

\"\u56fe9-20<\/figure>\n\n\n\n

\u25aa \u5e73\u8861\u4e8c\u53c9\u6811(AVL)<\/strong><\/p>\n\n\n\n

      \u4e3a\u4e86\u907f\u514d\u51fa\u73b0\u4e0a\u8ff0\u4e00\u8fb9\u5012\u7684\u5b58\u50a8\uff0c\u79d1\u5b66\u5bb6\u63d0\u51fa\u4e86\u201c\u5e73\u8861\u4e8c\u53c9\u6811\u201d\u3002<\/p>\n\n\n\n

      \u5728\u5e73\u8861\u4e8c\u53c9\u6811\u4e2d\u4efb\u4f55\u8282\u70b9\u7684\u4e24\u4e2a\u5b50\u6811\u7684\u9ad8\u5ea6\u6700\u5927\u5dee\u522b\u4e3a1\uff0c\u6240\u4ee5\u5b83\u4e5f\u88ab\u79f0\u4e3a\u9ad8\u5ea6\u5e73\u8861\u6811\u3002 \u589e\u52a0\u548c\u5220\u9664\u8282\u70b9\u53ef\u80fd\u9700\u8981\u901a\u8fc7\u4e00\u6b21\u6216\u591a\u6b21\u6811\u65cb\u8f6c\u6765\u91cd\u65b0\u5e73\u8861\u8fd9\u4e2a\u6811\u3002<\/p>\n\n\n\n

      \u8282\u70b9\u7684\u5e73\u8861\u56e0\u5b50\u662f\u5b83\u7684\u5de6\u5b50\u6811\u7684\u9ad8\u5ea6\u51cf\u53bb\u5b83\u7684\u53f3\u5b50\u6811\u7684\u9ad8\u5ea6(\u6709\u65f6\u76f8\u53cd)\u3002\u5e26\u6709\u5e73\u8861\u56e0\u5b501\u30010\u6216 -1\u7684\u8282\u70b9\u88ab\u8ba4\u4e3a\u662f\u5e73\u8861\u7684\u3002\u5e26\u6709\u5e73\u8861\u56e0\u5b50 -2\u62162\u7684\u8282\u70b9\u88ab\u8ba4\u4e3a\u662f\u4e0d\u5e73\u8861\u7684\uff0c\u5e76\u9700\u8981\u91cd\u65b0\u5e73\u8861\u8fd9\u4e2a\u6811\u3002<\/p>\n\n\n\n

      \u6bd4\u5982\uff0c\u6211\u4eec\u5b58\u50a8\u6392\u597d\u5e8f\u7684\u6570\u636e\u30103,4,8,12,13,14,16,23\u3011\uff0c\u589e\u52a0\u8282\u70b9\u5982\u679c\u51fa\u73b0\u4e0d\u5e73\u8861\uff0c\u5219\u901a\u8fc7\u8282\u70b9\u7684\u5de6\u65cb\u6216\u53f3\u65cb\uff0c\u91cd\u65b0\u5e73\u8861\u6811\u7ed3\u6784\uff0c\u6700\u7ec8\u5e73\u8861\u4e8c\u53c9\u6811\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n

\"\u56fe9-21<\/figure>\n\n\n\n

      \u5e73\u8861\u4e8c\u53c9\u6811\u8ffd\u6c42\u7edd\u5bf9\u5e73\u8861\uff0c\u5b9e\u73b0\u8d77\u6765\u6bd4\u8f83\u9ebb\u70e6\uff0c\u6bcf\u6b21\u63d2\u5165\u65b0\u8282\u70b9\u9700\u8981\u505a\u7684\u65cb\u8f6c\u64cd\u4f5c\u6b21\u6570\u4e0d\u80fd\u9884\u77e5\u3002<\/p>\n\n\n\n

\u25aa \u7ea2\u9ed1\u4e8c\u53c9\u6811<\/strong><\/p>\n\n\n\n

      \u7ea2\u9ed1\u4e8c\u53c9\u6811(\u7b80\u79f0\uff1a\u7ea2\u9ed1\u6811)\uff0c\u5b83\u9996\u5148\u662f\u4e00\u68f5\u4e8c\u53c9\u6811\uff0c\u540c\u65f6\u4e5f\u662f\u4e00\u68f5\u81ea\u5e73\u8861\u7684\u6392\u5e8f\u4e8c\u53c9\u6811\u3002<\/p>\n\n\n\n

      \u7ea2\u9ed1\u6811\u5728\u539f\u6709\u7684\u6392\u5e8f\u4e8c\u53c9\u6811\u589e\u52a0\u4e86\u5982\u4e0b\u51e0\u4e2a\u8981\u6c42\uff1a<\/p>\n\n\n\n

      1. \u6bcf\u4e2a\u8282\u70b9\u8981\u4e48\u662f\u7ea2\u8272\uff0c\u8981\u4e48\u662f\u9ed1\u8272\u3002<\/p>\n\n\n\n

      2. \u6839\u8282\u70b9\u6c38\u8fdc\u662f\u9ed1\u8272\u7684\u3002<\/p>\n\n\n\n

      3. \u6240\u6709\u7684\u53f6\u8282\u70b9\u90fd\u662f\u7a7a\u8282\u70b9(\u5373 null)\uff0c\u5e76\u4e14\u662f\u9ed1\u8272\u7684\u3002<\/p>\n\n\n\n

      4. \u6bcf\u4e2a\u7ea2\u8272\u8282\u70b9\u7684\u4e24\u4e2a\u5b50\u8282\u70b9\u90fd\u662f\u9ed1\u8272\u3002(\u4ece\u6bcf\u4e2a\u53f6\u5b50\u5230\u6839\u7684\u8def\u5f84\u4e0a\u4e0d\u4f1a\u6709\u4e24\u4e2a\u8fde\u7eed\u7684\u7ea2\u8272\u8282\u70b9)<\/p>\n\n\n\n

      5. \u4ece\u4efb\u4e00\u8282\u70b9\u5230\u5176\u5b50\u6811\u4e2d\u6bcf\u4e2a\u53f6\u5b50\u8282\u70b9\u7684\u8def\u5f84\u90fd\u5305\u542b\u76f8\u540c\u6570\u91cf\u7684\u9ed1\u8272\u8282\u70b9\u3002<\/p>\n\n\n\n

      \u8fd9\u4e9b\u7ea6\u675f\u5f3a\u5316\u4e86\u7ea2\u9ed1\u6811\u7684\u5173\u952e\u6027\u8d28\uff1a\u4ece\u6839\u5230\u53f6\u5b50\u7684\u6700\u957f\u7684\u53ef\u80fd\u8def\u5f84\u4e0d\u591a\u4e8e\u6700\u77ed\u7684\u53ef\u80fd\u8def\u5f84\u7684\u4e24\u500d\u957f\u3002\u8fd9\u6837\u5c31\u8ba9\u6811\u5927\u81f4\u4e0a\u662f\u5e73\u8861\u7684\u3002<\/p>\n\n\n\n

      \u7ea2\u9ed1\u6811\u662f\u4e00\u4e2a\u66f4\u9ad8\u6548\u7684\u68c0\u7d22\u4e8c\u53c9\u6811\uff0cJDK \u63d0\u4f9b\u7684\u96c6\u5408\u7c7b TreeMap\u3001TreeSet \u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u7ea2\u9ed1\u6811\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\"\u56fe9-22\u4e00\u4e2a\u5178\u578b\u7684\u7ea2\u9ed1\u6811\uff08\u8003\u8651\u4e66\u672c\u5370\u5237\u95ee\u9898\uff0c\u6d45\u8272\u8868\u793a\u7ea2\u8272\uff0c\u6df1\u8272\u8868\u793a\u9ed1\u8272\uff09.png\"<\/figure>\n\n\n\n

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