{"id":34877,"date":"2024-11-26T11:13:32","date_gmt":"2024-11-26T03:13:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34877\/"},"modified":"2024-11-26T11:13:32","modified_gmt":"2024-11-26T03:13:32","slug":"java%e6%80%8e%e4%b9%88%e6%8a%8a%e6%95%b0%e7%bb%84%e4%bb%8e%e5%a4%a7%e5%88%b0%e5%b0%8f%e6%8e%92%e5%88%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34877\/","title":{"rendered":"java\u600e\u4e48\u628a\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u53ef\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\uff1a1. \u4f7f\u7528 arrays.sort() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4f7f\u7528\u53cc\u8f74\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u539f\u5730\u6392\u5e8f\u6570\u7ec4\uff0c\u7ed3\u5408 collections.reverseorder() \u51fd\u6570\u5373\u53ef\u5b9e\u73b0\u964d\u5e8f\uff1b2. \u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\uff0c\u8be5\u6392\u5e8f\u5668\u5b9e\u73b0 comparator \u63a5\u53e3\uff0c\u5176 compare() \u65b9\u6cd5\u6307\u5b9a\u5143\u7d20\u4e4b\u95f4\u7684\u6392\u5e8f\u987a\u5e8f\uff0c\u5e76\u4e0e arrays.sort() \u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\uff0c\u6309\u6307\u5b9a\u987a\u5e8f\u6392\u5e8f\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110305212974096.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u628a\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\u63d2\u56fe\" alt=\"java\u600e\u4e48\u628a\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u7528 Java \u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Arrays.sort()<\/strong><\/p>\n<p>Arrays.sort() \u662f Java \u4e2d\u5185\u7f6e\u7684\u6392\u5e8f\u65b9\u6cd5\u3002\u5b83\u4f7f\u7528\u53cc\u8f74\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u5bf9\u6570\u7ec4\u8fdb\u884c\u539f\u5730\u6392\u5e8f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 Arrays.sort() \u964d\u5e8f\u6392\u5217\u6570\u7ec4\u7684\u6b65\u9aa4\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] numbers = {5, 2, 8, 3, 1, 9, 4, 7, 6};\nArrays.sort(numbers, Collections.reverseOrder());<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u6765\u6392\u5217\u6570\u7ec4\u3002\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u5b9e\u73b0 Comparator \u63a5\u53e3\uff0c\u5176 compare() \u65b9\u6cd5\u51b3\u5b9a\u5143\u7d20\u4e4b\u95f4\u7684\u6392\u5e8f\u987a\u5e8f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u4ece\u5927\u5230\u5c0f\u6392\u5217\u6570\u7ec4\u7684\u6b65\u9aa4\uff1a<\/p>\n<pre>class ReverseIntegerComparator implements Comparator&lt;Integer&gt; {\n    @Override\n    public int compare(Integer a, Integer b) {\n        return b - a;\n    }\n}\n\nint[] numbers = {5, 2, 8, 3, 1, 9, 4, 7, 6};\nArrays.sort(numbers, new ReverseIntegerComparator());<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\u8f93\u51fa\uff1a<\/strong><\/p>\n<p>\u65e0\u8bba\u662f\u4f7f\u7528 Arrays.sort() \u8fd8\u662f\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\uff0c\u6392\u5e8f\u540e\u7684\u6570\u7ec4\u90fd\u5e94\u8be5\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>[9, 8, 7, 6, 5, 4, 3, 2, 1]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u628a\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\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 \u4e2d\u53ef\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\uff1a1. \u4f7f\u7528 arrays.sort() \u65b9\u6cd5\uff0c\u8be5\u65b9\u6cd5\u4f7f\u7528\u53cc\u8f74\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u539f\u5730\u6392\u5e8f\u6570\u7ec4\uff0c\u7ed3\u5408 collections.reverseorder() \u51fd\u6570\u5373\u53ef\u5b9e\u73b0\u964d\u5e8f\uff1b2. \u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\uff0c\u8be5\u6392\u5e8f\u5668\u5b9e\u73b0 comparator \u63a5\u53e3\uff0c\u5176 compare() \u65b9\u6cd5\u6307\u5b9a\u5143\u7d20\u4e4b\u95f4\u7684\u6392\u5e8f\u987a\u5e8f\uff0c\u5e76\u4e0e arrays.sort() \u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\uff0c\u6309\u6307\u5b9a\u987a\u5e8f\u6392\u5e8f\u6570\u7ec4\u3002 \u5982\u4f55\u7528 Java \u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u5c06\u6570\u7ec4\u4ece\u5927\u5230\u5c0f\u6392\u5217\uff1a 1. \u4f7f\u7528 Arrays.sort() Arrays.sort() \u662f Java \u4e2d\u5185\u7f6e\u7684\u6392\u5e8f\u65b9\u6cd5\u3002\u5b83\u4f7f\u7528\u53cc\u8f74\u5feb\u901f\u6392\u5e8f\u7b97\u6cd5\u5bf9\u6570\u7ec4\u8fdb\u884c\u539f\u5730\u6392\u5e8f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 Arrays.sort() \u964d\u5e8f\u6392\u5217\u6570\u7ec4\u7684\u6b65\u9aa4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = {5, 2, 8, 3, 1, 9, 4, 7, 6}; Arrays.sort(numbers, Collections.reverseOrder()); \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668 \u4e5f\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u6765\u6392\u5217\u6570\u7ec4\u3002\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u5b9e\u73b0 Comparator \u63a5\u53e3\uff0c\u5176 compare() \u65b9\u6cd5\u51b3\u5b9a\u5143\u7d20\u4e4b\u95f4\u7684\u6392\u5e8f\u987a\u5e8f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u81ea\u5b9a\u4e49\u6392\u5e8f\u5668\u4ece\u5927\u5230\u5c0f\u6392\u5217\u6570\u7ec4\u7684\u6b65\u9aa4\uff1a class ReverseIntegerComparator implements [&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-34877","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34877","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=34877"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34877\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}