{"id":65692,"date":"2025-05-03T17:23:13","date_gmt":"2025-05-03T09:23:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65692\/"},"modified":"2025-05-03T17:23:13","modified_gmt":"2025-05-03T09:23:13","slug":"java%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96%e6%95%b0%e7%bb%84%e7%9a%84%e4%b8%8b%e6%a0%87-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65692\/","title":{"rendered":"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u7684\u4e0b\u6807"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\uff1a1. \u6570\u7ec4\u5143\u7d20\u53d8\u91cf\uff1b2. foreach \u5faa\u73af\u4e0e arrays.aslist() \u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\uff1b3. list.indexof() \u65b9\u6cd5\uff1b4. arrays.binarysearch() \u65b9\u6cd5\uff08\u9002\u7528\u4e8e\u5df2\u6392\u5e8f\u6570\u7ec4\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111307271942842.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u7684\u4e0b\u6807\u63d2\u56fe\" alt=\"java\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u7684\u4e0b\u6807\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u4e0b\u6807<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a<\/p>\n<p><strong>1. \u6570\u7ec4\u5143\u7d20\u53d8\u91cf<\/strong><\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\u53d8\u91cf\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u4e3a\u8981\u83b7\u53d6\u5176\u4e0b\u6807\u7684\u6570\u7ec4\u5143\u7d20\u3002\u6570\u7ec4\u5143\u7d20\u53d8\u91cf\u540d\u5373\u662f\u4e0b\u6807\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] array = {1, 2, 3};\nint firstElement = array[0]; \/\/ firstElement = 0<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. forEach \u5faa\u73af<\/strong><\/p>\n<p>\u4f7f\u7528 forEach \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u5728\u5faa\u73af\u4e2d\u83b7\u53d6\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002<\/p>\n<pre>int[] array = {1, 2, 3};\nfor (int element : array) {\n    int index = Arrays.asList(array).indexOf(element); \/\/ index = 0, 1, 2\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. List.indexOf()<\/strong><\/p>\n<p>\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a List\uff0c\u7136\u540e\u4f7f\u7528 List.indexOf() \u65b9\u6cd5\u83b7\u53d6\u5143\u7d20\u7684\u4e0b\u6807\u3002<\/p>\n<pre>int[] array = {1, 2, 3};\nList&lt;Integer&gt; list = Arrays.asList(array);\nint index = list.indexOf(2); \/\/ index = 1<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. Arrays.binarySearch()<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u5df2\u7ecf\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.binarySearch() \u65b9\u6cd5\u8fdb\u884c\u5feb\u901f\u67e5\u627e\u3002\u5982\u679c\u627e\u5230\u5143\u7d20\uff0c\u5b83\u5c06\u8fd4\u56de\u4e0b\u6807\uff1b\u5426\u5219\u8fd4\u56de\u8d1f\u6570\u3002<\/p>\n<pre>int[] array = {1, 2, 3};\nint index = Arrays.binarySearch(array, 2); \/\/ index = 1<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u83b7\u53d6\u6570\u7ec4\u7684\u4e0b\u6807\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 \u4e2d\uff0c\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\uff1a1. \u6570\u7ec4\u5143\u7d20\u53d8\u91cf\uff1b2. foreach \u5faa\u73af\u4e0e arrays.aslist() \u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\uff1b3. list.indexof() \u65b9\u6cd5\uff1b4. arrays.binarysearch() \u65b9\u6cd5\uff08\u9002\u7528\u4e8e\u5df2\u6392\u5e8f\u6570\u7ec4\uff09\u3002 \u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u7684\u4e0b\u6807 \u5728 Java \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a 1. \u6570\u7ec4\u5143\u7d20\u53d8\u91cf \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\u53d8\u91cf\uff0c\u5e76\u5c06\u5176\u8d4b\u503c\u4e3a\u8981\u83b7\u53d6\u5176\u4e0b\u6807\u7684\u6570\u7ec4\u5143\u7d20\u3002\u6570\u7ec4\u5143\u7d20\u53d8\u91cf\u540d\u5373\u662f\u4e0b\u6807\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] array = {1, 2, 3}; int firstElement = array[0]; \/\/ firstElement = 0 \u767b\u5f55\u540e\u590d\u5236 2. forEach \u5faa\u73af \u4f7f\u7528 forEach \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u5728\u5faa\u73af\u4e2d\u83b7\u53d6\u6bcf\u4e2a\u5143\u7d20\u7684\u4e0b\u6807\u3002 int[] array = {1, 2, 3}; for (int element : array) { [&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-65692","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65692","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=65692"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65692\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}