{"id":64166,"date":"2025-05-03T11:11:03","date_gmt":"2025-05-03T03:11:03","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64166\/"},"modified":"2025-05-03T11:11:03","modified_gmt":"2025-05-03T03:11:03","slug":"java%e6%95%b0%e7%bb%84%e4%b8%ad%e4%b8%a4%e4%b8%aa%e6%95%b0%e6%80%8e%e4%b9%88%e8%b0%83%e6%8d%a2-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64166\/","title":{"rendered":"java\u6570\u7ec4\u4e2d\u4e24\u4e2a\u6570\u600e\u4e48\u8c03\u6362"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u6570\u7ec4\u4e2d\u8c03\u6362\u4e24\u4e2a\u6570\u7684\u65b9\u6cd5\u6709\u56db\u79cd\uff1a\u4f7f\u7528\u4e34\u65f6\u53d8\u91cf\u4f7f\u7528\u5f02\u6216\u8fd0\u7b97\u4f7f\u7528 collections.swap() \u65b9\u6cd5\u4f7f\u7528 java 8+ \u7684\u6d41\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/02\/2024110216362620666.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u4e2d\u4e24\u4e2a\u6570\u600e\u4e48\u8c03\u6362\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u4e2d\u4e24\u4e2a\u6570\u600e\u4e48\u8c03\u6362\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5728 Java \u6570\u7ec4\u4e2d\u8c03\u6362\u4e24\u4e2a\u6570<\/strong><\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528\u4e34\u65f6\u53d8\u91cf<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\u6765\u5b58\u50a8\u5176\u4e2d\u4e00\u4e2a\u6570\u5b57\u3002<\/li>\n<li>\u5c06\u53e6\u4e00\u4e2a\u6570\u5b57\u5206\u914d\u7ed9\u7b2c\u4e00\u4e2a\u6570\u5b57\u3002<\/li>\n<li>\u5c06\u4e34\u65f6\u53d8\u91cf\u7684\u503c\u5206\u914d\u7ed9\u7b2c\u4e8c\u4e2a\u6570\u5b57\u3002<\/li>\n<\/ul>\n<pre>int[] arr = {1, 2, 3};\nint temp = arr[0];\narr[0] = arr[1];\narr[1] = temp;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u5f02\u6216\u8fd0\u7b97<\/strong><\/p>\n<p>\u5f02\u6216\u8fd0\u7b97\u7b26 (^) \u53ef\u4ee5\u7528\u6765\u8c03\u6362\u4e24\u4e2a\u6570\u5b57\uff0c\u800c\u4e0d\u9700\u8981\u4e34\u65f6\u53d8\u91cf\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3};\narr[0] ^= arr[1];\narr[1] ^= arr[0];\narr[0] ^= arr[1];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u4e2a\u8fc7\u7a0b\u7684\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>arr[0] \u548c arr[1] \u7684\u5f02\u6216\u7ed3\u679c\u5b58\u50a8\u5728 arr[0] \u4e2d\uff0c\u5373 arr[0] = arr[0] ^ arr[1]\u3002<\/li>\n<li>arr[1] \u548c arr[0] \u7684\u5f02\u6216\u7ed3\u679c\u5b58\u50a8\u5728 arr[1] \u4e2d\uff0c\u5373 arr[1] = arr[1] ^ arr[0]\u3002<\/li>\n<li>arr[0] \u548c arr[1] \u7684\u5f02\u6216\u7ed3\u679c\u5b58\u50a8\u5728 arr[0] \u4e2d\uff0c\u5373 arr[0] = arr[0] ^ arr[1]\uff0c\u8fd9\u5c06\u4f7f arr[0] \u6062\u590d\u5176\u539f\u59cb\u503c\u3002<\/li>\n<\/ul>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 Collections.swap() \u65b9\u6cd5<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u662f\u7531\u96c6\u5408\u7c7b\uff08\u5982 ArrayList\uff09\u5b58\u50a8\u7684\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528 Collections.swap() \u65b9\u6cd5\u8f7b\u677e\u8c03\u6362\u4e24\u4e2a\u6570\u5b57\uff1a<\/p>\n<pre>List&lt;Integer&gt; list = new ArrayList&lt;&gt;();\nlist.add(1);\nlist.add(2);\nlist.add(3);\n\nCollections.swap(list, 0, 1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 4\uff1a\u4f7f\u7528 Java 8+ \u7684\u6d41<\/strong><\/p>\n<p>Java 8+ \u4e2d\u7684\u6d41 API \u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u8c03\u6362\u6570\u7ec4\u4e2d\u7684\u4e24\u4e2a\u6570\u5b57\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3};\n\nint temp = IntStream.of(arr[0], arr[1])\n        .reduce((a, b) -&gt; a ^ b)\n        .getAsInt();\n\narr[0] ^= temp;\narr[1] ^= temp;\narr[0] ^= temp;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u4e2d\u4e24\u4e2a\u6570\u600e\u4e48\u8c03\u6362\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u6570\u7ec4\u4e2d\u8c03\u6362\u4e24\u4e2a\u6570\u7684\u65b9\u6cd5\u6709\u56db\u79cd\uff1a\u4f7f\u7528\u4e34\u65f6\u53d8\u91cf\u4f7f\u7528\u5f02\u6216\u8fd0\u7b97\u4f7f\u7528 collections.swap() \u65b9\u6cd5\u4f7f\u7528 java 8+ \u7684\u6d41 \u5728 Java \u6570\u7ec4\u4e2d\u8c03\u6362\u4e24\u4e2a\u6570 \u65b9\u6cd5 1\uff1a\u4f7f\u7528\u4e34\u65f6\u53d8\u91cf \u521b\u5efa\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\u6765\u5b58\u50a8\u5176\u4e2d\u4e00\u4e2a\u6570\u5b57\u3002 \u5c06\u53e6\u4e00\u4e2a\u6570\u5b57\u5206\u914d\u7ed9\u7b2c\u4e00\u4e2a\u6570\u5b57\u3002 \u5c06\u4e34\u65f6\u53d8\u91cf\u7684\u503c\u5206\u914d\u7ed9\u7b2c\u4e8c\u4e2a\u6570\u5b57\u3002 int[] arr = {1, 2, 3}; int temp = arr[0]; arr[0] = arr[1]; arr[1] = temp; \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528\u5f02\u6216\u8fd0\u7b97 \u5f02\u6216\u8fd0\u7b97\u7b26 (^) \u53ef\u4ee5\u7528\u6765\u8c03\u6362\u4e24\u4e2a\u6570\u5b57\uff0c\u800c\u4e0d\u9700\u8981\u4e34\u65f6\u53d8\u91cf\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3}; arr[0] ^= arr[1]; arr[1] ^= arr[0]; arr[0] ^= arr[1]; \u767b\u5f55\u540e\u590d\u5236 [&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-64166","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64166","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=64166"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64166\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64166"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64166"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64166"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}