TreeMap \u548c TreeSet \u662f Java Collection Framework \u7684\u4e24\u4e2a\u91cd\u8981\u6210\u5458\u3002\u5176\u4e2dTreeMap \u662f Map \u63a5\u53e3\u7684\u5e38\u7528\u5b9e\u73b0\u7c7b\uff0c\u800c TreeSet \u662f Set \u63a5\u53e3\u7684\u5e38\u7528\u5b9e\u73b0\u7c7b\u3002\u867d\u7136 TreeMap \u548c TreeSet \u5b9e\u73b0\u7684\u63a5\u53e3\u89c4\u8303\u4e0d\u540c\uff0c\u4f46 TreeSet \u5e95\u5c42\u662f\u901a\u8fc7TreeMap \u6765\u5b9e\u73b0\u7684\uff08\u5982\u540c HashSet \u5e95\u5c42\u662f\u662f\u901a\u8fc7 HashMap \u6765\u5b9e\u73b0\u7684\u4e00\u6837\uff09\uff0c\u56e0\u6b64\u4e8c\u8005\u7684\u5b9e\u73b0\u65b9\u5f0f\u5b8c\u5168\u4e00\u6837\u3002\u800c TreeMap\u7684\u5b9e\u73b0\u5c31\u662f\u7ea2\u9ed1\u6811\u7b97\u6cd5\u3002
\n\u4e0eHashSet\u5b8c\u5168\u7c7b\u4f3c\uff0cTreeSet\u91cc\u9762\u7edd\u5927\u90e8\u5206\u65b9\u6cd5\u90fd\u662f\u76f4\u63a5\u8c03\u7528TreeMap \u65b9\u6cd5\u6765\u5b9e\u73b0\u7684\u3002
\n\u76f8\u540c\u70b9\uff1a
\nTreeMap \u548c TreeSet \u90fd\u662f\u6709\u5e8f\u7684\u96c6\u5408\uff0c\u4e5f\u5c31\u662f\u8bf4\u4ed6\u4eec\u5b58\u50a8\u7684\u503c\u90fd\u662f\u6392\u597d\u5e8f\u7684\u3002TreeMap \u548cTreeSet \u90fd\u662f\u975e\u540c\u6b65\u96c6\u5408\uff0c\u56e0\u6b64\u4ed6\u4eec\u4e0d\u80fd\u5728\u591a\u7ebf\u7a0b\u4e4b\u95f4\u5171\u4eab\uff0c\u4e0d\u8fc7\u53ef\u4ee5\u4f7f\u7528\u65b9\u6cd5 Collections.synchroinzedMap()\u6765\u5b9e\u73b0\u540c\u6b65
\n\u8fd0\u884c\u901f\u5ea6\u90fd\u8981\u6bd4 Hash \u96c6\u5408\u6162\uff0c\u4ed6\u4eec\u5185\u90e8\u5bf9\u5143\u7d20\u7684\u64cd\u4f5c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(logN)\uff0c\u800c HashMap\/HashSet \u5219\u4e3aO(1)\u3002
\n\u4e0d\u540c\u70b9\uff1a
\n\u6700\u4e3b\u8981\u7684\u533a\u522b\u5c31\u662f TreeSet \u548c TreeMap \u5206\u522b\u5b9e\u73b0 Set \u548cMap \u63a5\u53e3
\nTreeSet \u53ea\u5b58\u50a8\u4e00\u4e2a\u5bf9\u8c61\uff0c\u800c TreeMap \u5b58\u50a8\u4e24\u4e2a\u5bf9\u8c61 Key \u548cValue \uff08\u4ec5\u4ec5 key\u5bf9\u8c61\u6709\u5e8f\uff09
\nTreeSet \u4e2d\u4e0d\u80fd\u6709\u91cd\u590d\u5bf9\u8c61\uff0c\u800c TreeMap \u4e2d\u53ef\u4ee5\u5b58\u5728
\nTreeMap \u7684\u5e95\u5c42\u91c7\u7528\u7ea2\u9ed1\u6811\u7684\u5b9e\u73b0\uff0c\u5b8c\u6210\u6570\u636e\u6709\u5e8f\u7684\u63d2\u5165\uff0c\u6392\u5e8f\u3002
\n\u7ea2\u9ed1\u6811\u7684\u7279\u70b9\uff1a
\n1\u3001\u6bcf\u4e2a\u8282\u70b9\u8981\u4e48\u662f\u7ea2\u8272\uff0c\u8981\u4e48\u662f\u9ed1\u8272\u3002
\n2\u3001\u6839\u8282\u70b9\u6c38\u8fdc\u662f\u9ed1\u8272\u7684\u3002
\n3\u3001\u6240\u6709\u7684\u53f6\u8282\u70b9\u90fd\u662f\u7a7a\u8282\u70b9\uff08\u5373 null\uff09\uff0c\u5e76\u4e14\u662f\u9ed1\u8272\u7684\u3002
\n4\u3001\u6bcf\u4e2a\u7ea2\u8272\u8282\u70b9\u7684\u4e24\u4e2a\u5b50\u8282\u70b9\u90fd\u662f\u9ed1\u8272\u3002\uff08\u4ece\u6bcf\u4e2a\u53f6\u5b50\u5230\u6839\u7684\u8def\u5f84\u4e0a\u4e0d\u4f1a\u6709\u4e24\u4e2a\u8fde\u7eed\u7684\u7ea2\u8272\u8282\u70b9\uff09
\n5\u3001\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
\nTreeSet \u8981\u6c42\u5b58\u653e\u7684\u5bf9\u8c61\u6240\u5c5e\u7684\u7c7b\u5fc5\u987b\u5b9e\u73b0Comparable \u63a5\u53e3\uff0c\u8be5\u63a5\u53e3\u63d0\u4f9b\u4e86\u6bd4\u8f83\u5143\u7d20\u7684 compareTo()\u65b9\u6cd5\uff0c\u5f53\u63d2\u5165\u5143\u7d20\u65f6\u4f1a\u56de\u8c03\u8be5\u65b9\u6cd5\u6bd4\u8f83\u5143\u7d20\u7684\u5927\u5c0f\uff0c
\nTreeMap\u8981\u6c42\u5b58\u653e\u7684\u952e\u503c\u5bf9\u6620\u5c04\u7684\u952e\u5fc5\u987b\u5b9e\u73b0Comparable\u63a5\u53e3\u4ece\u800c\u6839\u636e\u952e\u5bf9\u5143\u7d20\u8fdb\u884c\u6392\u5e8f\u3002
\nCollections \u5de5\u5177\u7c7b\u7684 sort \u65b9\u6cd5\u6709\u4e24\u79cd\u91cd\u8f7d\u7684\u5f62\u5f0f
\n\u7b2c\u4e00\u79cd\u8981\u6c42\u4f20\u5165\u7684\u5f85\u6392\u5e8f\u5bb9\u5668\u4e2d\u5b58\u653e\u7684\u5bf9\u8c61\u6bd4\u8f83\u5b9e\u73b0 Comparable \u63a5\u53e3\u4ee5\u5b9e\u73b0\u5143\u7d20\u7684\u6bd4\u8f83\uff1b
\n\u7b2c\u4e8c\u79cd\u4e0d\u5f3a\u5236\u6027\u7684\u8981\u6c42\u5bb9\u5668\u4e2d\u7684\u5143\u7d20\u5fc5\u987b\u53ef\u6bd4\u8f83\uff0c\u4f46\u662f\u8981\u6c42\u4f20\u5165\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u53c2\u6570\u662f Comparator \u63a5\u53e3\u7684\u5b50\u7c7b\u578b(\u9700\u8981\u91cd\u5199 compare \u65b9\u6cd5\u5b9e\u73b0\u5143\u7d20\u7684\u6bd4\u8f83)\uff0c\u76f8\u5f53\u4e8e\u4e00\u4e2a\u4e34\u65f6\u5b9a\u4e49\u7684\u6392\u5e8f\u89c4\u5219\uff0c\u5176\u5b9e\u5c31\u662f\u901a\u8fc7\u63a5\u53e3\u6ce8\u5165\u6bd4\u8f83\u5143\u7d20\u5927\u5c0f\u7684\u7b97\u6cd5\u3002
\n\u4e5f\u662f\u5bf9\u56de\u8c03\u6a21\u5f0f\u7684\u5e94\u7528\uff08Java \u4e2d\u5bf9\u51fd\u6570\u5f0f\u7f16\u7a0b\u7684\u652f\u6301\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
TreeMap \u548c TreeSet \u662f Java Collection Framework \u7684\u4e24\u4e2a\u91cd\u8981\u6210\u5458\u3002\u5176 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[],"class_list":["post-9070","post","type-post","status-publish","format-standard","hentry","category-javabase"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9070","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\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9070"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9070\/revisions"}],"predecessor-version":[{"id":9071,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9070\/revisions\/9071"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9070"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}