{"id":36569,"date":"2024-11-26T17:47:16","date_gmt":"2024-11-26T09:47:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36569\/"},"modified":"2024-11-26T17:47:16","modified_gmt":"2024-11-26T09:47:16","slug":"java%e6%95%b0%e7%bb%84%e6%8e%92%e5%ba%8f%e6%96%b9%e6%b3%95%e9%83%bd%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36569\/","title":{"rendered":"java\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\u90fd\u6709\u54ea\u4e9b"},"content":{"rendered":"<blockquote><p>\n  java \u63d0\u4f9b\u591a\u79cd\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\uff1a\u5185\u7f6e\u6392\u5e8f\u7b97\u6cd5\uff1aarrays.sort()\uff1a\u5feb\u901f\u6392\u5e8f\uff08o(n log n)\uff09arrays.parallelsort()\uff1a\u5e76\u884c\u5feb\u901f\u6392\u5e8fcollections.sort()\uff1a\u5f52\u5e76\u6392\u5e8f\uff08o(n log n)\uff09\u81ea\u5b9a\u4e49\u6392\u5e8f\u7b97\u6cd5\uff1a\u5feb\u901f\u6392\u5e8f\uff08o(n log n)\uff09\u5f52\u5e76\u6392\u5e8f\uff08o(n log n)\uff09\u5806\u6392\u5e8f\uff08o(n log n)\uff09\u63d2\u5165\u6392\u5e8f\uff08\u5c0f\u6570\u636e\u91cf\uff0co(n^2)\uff09\u9009\u62e9\u6392\u5e8f\uff08o(n^2)\uff09\u5192\u6ce1\u6392\u5e8f\uff08o(n^2)\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111210220036418.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\u90fd\u6709\u54ea\u4e9b\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\u90fd\u6709\u54ea\u4e9b\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5<\/strong><\/p>\n<p><strong>1. \u5185\u7f6e\u6392\u5e8f\u7b97\u6cd5<\/strong><\/p>\n<ul>\n<li> <strong>Arrays.sort()\uff1a<\/strong> \u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u5177\u6709 O(n log n) \u7684\u5e73\u5747\u65f6\u95f4\u590d\u6742\u5ea6\u548c O(n^2) \u7684\u6700\u574f\u65f6\u95f4\u590d\u6742\u5ea6\u3002<\/li>\n<li> <strong>Arrays.parallelSort()\uff1a<\/strong> \u5e76\u884c\u7248\u672c\uff0c\u5229\u7528\u591a\u4e2a\u3002<\/li>\n<li> <strong>Collections.sort()\uff1a<\/strong> \u4f7f\u7528\u5f52\u5e76\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002<\/li>\n<li> <strong>IntStream.sorted()\uff1a<\/strong> \u4e13\u95e8\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u7684\u6392\u5e8f\uff0c\u4f8b\u5982 int[]\u3002<\/li>\n<li> <strong>LongStream.sorted()\uff1a<\/strong> \u4e13\u95e8\u7528\u4e8e long[]\u3002<\/li>\n<\/ul>\n<p><strong>2. \u81ea\u5b9a\u4e49\u6392\u5e8f\u7b97\u6cd5<\/strong><\/p>\n<ul>\n<li> <strong>\u5feb\u901f\u6392\u5e8f\uff1a<\/strong> \u4e00\u79cd\u5206\u6cbb\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002<\/li>\n<li> <strong>\u5f52\u5e76\u6392\u5e8f\uff1a<\/strong> \u53e6\u4e00\u79cd\u5206\u6cbb\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002<\/li>\n<li> <strong>\u5806\u6392\u5e8f\uff1a<\/strong> \u4f7f\u7528\u4e8c\u53c9\u5806\u6765\u6392\u5e8f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002<\/li>\n<li> <strong>\u63d2\u5165\u6392\u5e8f\uff1a<\/strong> \u7528\u4e8e\u5c0f\u6570\u636e\u7684\u6392\u5e8f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n^2)\u3002<\/li>\n<li> <strong>\u9009\u62e9\u6392\u5e8f\uff1a<\/strong> \u6bcf\u6b21\u9009\u62e9\u6700\u5c0f\u7684\u5143\u7d20\u653e\u5728\u524d\u9762\u7684\u6392\u5e8f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n^2)\u3002<\/li>\n<li> <strong>\uff1a<\/strong> \u6bcf\u6b21\u6bd4\u8f83\u76f8\u90bb\u5143\u7d20\uff0c\u7136\u540e\u4ea4\u6362\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n^2)\u3002<\/li>\n<\/ul>\n<p><strong>\u9009\u62e9\u6392\u5e8f\u7b97\u6cd5\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u4f7f\u7528\u54ea\u79cd\u6392\u5e8f\u7b97\u6cd5\u53d6\u51b3\u4e8e\u6570\u636e\u5927\u5c0f\u3001\u7c7b\u578b\u548c\u6392\u5e8f\u8981\u6c42\u3002<\/li>\n<li>\u5185\u7f6e\u6392\u5e8f\u7b97\u6cd5\u5bf9\u4e8e\u5c0f\u6570\u636e\u91cf\u548c\u57fa\u672c\u7c7b\u578b\u901a\u5e38\u6bd4\u8f83\u9ad8\u6548\u3002<\/li>\n<li>\u81ea\u5b9a\u4e49\u6392\u5e8f\u7b97\u6cd5\u53ef\u4ee5\u6839\u636e\u7279\u5b9a\u9700\u6c42\u8fdb\u884c\u4f18\u5316\uff0c\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5927\u6570\u636e\u91cf\uff0c\u5f52\u5e76\u6392\u5e8f\u548c\u5feb\u901f\u6392\u5e8f\u66f4\u6709\u6548\u7387\u3002<\/li>\n<li>\u5bf9\u4e8e\u5b9a\u5236\u6392\u5e8f\u903b\u8f91\uff0c\u53ef\u4ee5\u4f7f\u7528 Comparator \u6216 Comparable \u63a5\u53e3\u5b9e\u73b0\u81ea\u5b9a\u4e49\u6bd4\u8f83\u5668\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\u90fd\u6709\u54ea\u4e9b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u63d0\u4f9b\u591a\u79cd\u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5\uff1a\u5185\u7f6e\u6392\u5e8f\u7b97\u6cd5\uff1aarrays.sort()\uff1a\u5feb\u901f\u6392\u5e8f\uff08o(n log n)\uff09arrays.parallelsort()\uff1a\u5e76\u884c\u5feb\u901f\u6392\u5e8fcollections.sort()\uff1a\u5f52\u5e76\u6392\u5e8f\uff08o(n log n)\uff09\u81ea\u5b9a\u4e49\u6392\u5e8f\u7b97\u6cd5\uff1a\u5feb\u901f\u6392\u5e8f\uff08o(n log n)\uff09\u5f52\u5e76\u6392\u5e8f\uff08o(n log n)\uff09\u5806\u6392\u5e8f\uff08o(n log n)\uff09\u63d2\u5165\u6392\u5e8f\uff08\u5c0f\u6570\u636e\u91cf\uff0co(n^2)\uff09\u9009\u62e9\u6392\u5e8f\uff08o(n^2)\uff09\u5192\u6ce1\u6392\u5e8f\uff08o(n^2) Java \u6570\u7ec4\u6392\u5e8f\u65b9\u6cd5 1. \u5185\u7f6e\u6392\u5e8f\u7b97\u6cd5 Arrays.sort()\uff1a \u4f7f\u7528\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\uff0c\u8be5\u7b97\u6cd5\u5177\u6709 O(n log n) \u7684\u5e73\u5747\u65f6\u95f4\u590d\u6742\u5ea6\u548c O(n^2) \u7684\u6700\u574f\u65f6\u95f4\u590d\u6742\u5ea6\u3002 Arrays.parallelSort()\uff1a \u5e76\u884c\u7248\u672c\uff0c\u5229\u7528\u591a\u4e2a\u3002 Collections.sort()\uff1a \u4f7f\u7528\u5f52\u5e76\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002 IntStream.sorted()\uff1a \u4e13\u95e8\u7528\u4e8e\u57fa\u672c\u7c7b\u578b\u7684\u6392\u5e8f\uff0c\u4f8b\u5982 int[]\u3002 LongStream.sorted()\uff1a \u4e13\u95e8\u7528\u4e8e long[]\u3002 2. \u81ea\u5b9a\u4e49\u6392\u5e8f\u7b97\u6cd5 \u5feb\u901f\u6392\u5e8f\uff1a \u4e00\u79cd\u5206\u6cbb\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002 \u5f52\u5e76\u6392\u5e8f\uff1a \u53e6\u4e00\u79cd\u5206\u6cbb\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002 \u5806\u6392\u5e8f\uff1a \u4f7f\u7528\u4e8c\u53c9\u5806\u6765\u6392\u5e8f\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n log n)\u3002 \u63d2\u5165\u6392\u5e8f\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-36569","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=36569"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36569\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}