{"id":67019,"date":"2025-05-03T17:06:58","date_gmt":"2025-05-03T09:06:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/67019\/"},"modified":"2025-05-03T17:06:58","modified_gmt":"2025-05-03T09:06:58","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%88%a4%e6%96%ad%e5%8f%a6%e4%b8%80%e4%b8%aa%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/67019\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u5224\u65ad\u53e6\u4e00\u4e2a\u6570"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u5224\u65ad\u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 arrays.binarysearch() \u65b9\u6cd5\u8fdb\u884c\u9ad8\u6548\u7684\u641c\u7d22\uff1b\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u9010\u4e2a\u6bd4\u8f83\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/18\/2024111814092762895.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u600e\u4e48\u5224\u65ad\u53e6\u4e00\u4e2a\u6570\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u600e\u4e48\u5224\u65ad\u53e6\u4e00\u4e2a\u6570\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5224\u65ad\u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57<\/strong><\/p>\n<p>\u5224\u65ad Java \u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u4e0b\u9762\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Arrays.binarySearch() \u65b9\u6cd5<\/strong><\/p>\n<p>Arrays.binarySearch() \u65b9\u6cd5\u53ef\u4ee5\u9ad8\u6548\u5730\u641c\u7d22\u5df2\u6392\u5e8f\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15\uff0c\u5982\u679c\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u8d1f\u6570\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 3, 5, 7, 9};\nint target = 5;\n\nint index = Arrays.binarySearch(arr, target);\nif (index &gt;= 0) {\n    System.out.println(\"\u6570\u5b57 \" + target + \" \u5728\u6570\u7ec4\u4e2d\");\n} else {\n    System.out.println(\"\u6570\u5b57 \" + target + \" \u4e0d\u5728\u6570\u7ec4\u4e2d\");\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528\u5faa\u73af<\/strong><\/p>\n<p>\u5982\u679c\u6570\u7ec4\u672a\u6392\u5e8f\uff0c\u6216\u8005\u60f3\u8981\u904d\u5386\u6570\u7ec4\u800c\u4e0d\u8003\u8651\u987a\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u3002<\/p>\n<pre>int[] arr = {1, 3, 5, 7, 9};\nint target = 5;\n\nboolean found = false;\nfor (int i = 0; i &lt; arr.length; i++) {\n    if (arr[i] == target) {\n        found = true;\n        break;\n    }\n}\n\nif (found) {\n    System.out.println(\"\u6570\u5b57 \" + target + \" \u5728\u6570\u7ec4\u4e2d\");\n} else {\n    System.out.println(\"\u6570\u5b57 \" + target + \" \u4e0d\u5728\u6570\u7ec4\u4e2d\");\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u5224\u65ad\u53e6\u4e00\u4e2a\u6570\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>java \u4e2d\u5224\u65ad\u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57\u7684\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528 arrays.binarysearch() \u65b9\u6cd5\u8fdb\u884c\u9ad8\u6548\u7684\u641c\u7d22\uff1b\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u9010\u4e2a\u6bd4\u8f83\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5224\u65ad\u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57 \u5224\u65ad Java \u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728\u67d0\u4e2a\u6570\u5b57\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u4e0b\u9762\u4ecb\u7ecd\u4e24\u79cd\u6700\u5e38\u7528\u7684\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 Arrays.binarySearch() \u65b9\u6cd5 Arrays.binarySearch() \u65b9\u6cd5\u53ef\u4ee5\u9ad8\u6548\u5730\u641c\u7d22\u5df2\u6392\u5e8f\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\uff0c\u8868\u793a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15\uff0c\u5982\u679c\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u8d1f\u6570\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 3, 5, 7, 9}; int target = 5; int index = Arrays.binarySearch(arr, target); if (index &gt;= 0) { System.out.println(&#8220;\u6570\u5b57 &#8221; + target + &#8221; \u5728\u6570\u7ec4\u4e2d&#8221;); } else { System.out.println(&#8220;\u6570\u5b57 &#8221; + target + &#8221; [&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-67019","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67019","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=67019"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67019\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=67019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=67019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=67019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}