{"id":64554,"date":"2025-05-03T09:53:17","date_gmt":"2025-05-03T01:53:17","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64554\/"},"modified":"2025-05-03T09:53:17","modified_gmt":"2025-05-03T01:53:17","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e6%9f%90%e4%b8%aa%e5%80%bc-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64554\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u503c"},"content":{"rendered":"

\n \u6570\u7ec4\u4e2d\u67d0\u4e2a\u503c\u53ef\u901a\u8fc7 [ ] \u8fd0\u7b97\u7b26\u76f4\u63a5\u8bbf\u95ee\uff0clength \u5c5e\u6027\u8868\u793a\u6570\u7ec4\u957f\u5ea6\uff0cfor \u5faa\u73af\u904d\u5386\u6570\u7ec4\u67e5\u627e\u5143\u7d20\uff0carrays.binarysearch() \u65b9\u6cd5\u7528\u4e8e\u5df2\u6392\u5e8f\u6570\u7ec4\u9ad8\u6548\u67e5\u627e\uff0c\u8fd4\u56de\u6307\u5b9a\u503c\u7d22\u5f15\u6216\u8d1f\u6570\u3002\n<\/p><\/blockquote>\n

\"java\u4e2d\u600e\u4e48\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u503c\u63d2\u56fe\"<\/p>\n

Java\u4e2d\u8868\u793a\u6570\u7ec4\u4e2d\u67d0\u4e2a\u503c\u7684\u65b9\u6cd5<\/strong><\/p>\n

\u76f4\u63a5\u8bbf\u95ee<\/strong><\/p>\n

\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4e2d\u62ec\u53f7\u8fd0\u7b97\u7b26 [ \u548c ] \u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n

int[] numbers = {1, 2, 3, 4, 5};\nint secondNumber = numbers[1];  \/\/ secondNumber = 2<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528length\u5c5e\u6027<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
length \u5c5e\u6027\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7\u51cf\u53bb1\u6765\u83b7\u5f97\u6570\u7ec4\u4e2d\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nint lastNumber = numbers[numbers.length - 1];  \/\/ lastNumber = 5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528for\u5faa\u73af<\/strong><\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u904d\u5386\u6570\u7ec4\u5e76\u627e\u5230\u7279\u5b9a\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\uff1a<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nint targetValue = 3;\nint foundIndex = -1;\nfor (int i = 0; i < numbers.length; i++) {\n    if (numbers[i] == targetValue) {\n        foundIndex = i;\n        break;\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528Arrays.binarySearch()<\/strong><\/p>\n
\u5bf9\u4e8e\u5df2\u6392\u5e8f\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.binarySearch() \u65b9\u6cd5\u66f4\u6709\u6548\u5730\u67e5\u627e\u503c\u3002\u5b83\u8fd4\u56de\u6307\u5b9a\u503c\u7684\u7d22\u5f15\uff0c\u5982\u679c\u6ca1\u6709\u627e\u5230\u8be5\u503c\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u8d1f\u6570\uff1a<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nint targetValue = 3;\nint foundIndex = Arrays.binarySearch(numbers, targetValue);  \/\/ foundIndex = 2<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u8868\u793a\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u503c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6570\u7ec4\u4e2d\u67d0\u4e2a\u503c\u53ef\u901a\u8fc7 [ ] \u8fd0\u7b97\u7b26\u76f4\u63a5\u8bbf\u95ee\uff0clength \u5c5e\u6027\u8868\u793a\u6570\u7ec4\u957f\u5ea6\uff0cfor \u5faa\u73af\u904d\u5386\u6570\u7ec4\u67e5\u627e\u5143\u7d20\uff0carrays.binarysearch() \u65b9\u6cd5\u7528\u4e8e\u5df2\u6392\u5e8f\u6570\u7ec4\u9ad8\u6548\u67e5\u627e\uff0c\u8fd4\u56de\u6307\u5b9a\u503c\u7d22\u5f15\u6216\u8d1f\u6570\u3002 Java\u4e2d\u8868\u793a\u6570\u7ec4\u4e2d\u67d0\u4e2a\u503c\u7684\u65b9\u6cd5 \u76f4\u63a5\u8bbf\u95ee \u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u4e2d\u62ec\u53f7\u8fd0\u7b97\u7b26 [ \u548c ] \u6765\u8bbf\u95ee\u6570\u7ec4\u4e2d\u7684\u7279\u5b9a\u5143\u7d20\u3002\u4f8b\u5982\uff1a int[] numbers = {1, 2, 3, 4, 5}; int secondNumber = numbers[1]; \/\/ secondNumber = 2 \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528length\u5c5e\u6027 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b length \u5c5e\u6027\u8868\u793a\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002\u53ef\u4ee5\u901a\u8fc7\u51cf\u53bb1\u6765\u83b7\u5f97\u6570\u7ec4\u4e2d\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff1a int[] numbers = {1, 2, 3, 4, 5}; int lastNumber = numbers[numbers.length – 1]; \/\/ lastNumber = 5 \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528for\u5faa\u73af […]<\/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-64554","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64554","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=64554"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64554\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}