{"id":65187,"date":"2025-05-03T14:23:48","date_gmt":"2025-05-03T06:23:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65187\/"},"modified":"2025-05-03T14:23:48","modified_gmt":"2025-05-03T06:23:48","slug":"java%e6%95%b0%e7%bb%84%e5%87%bd%e6%95%b0%e6%9c%89%e5%93%aa%e4%ba%9b-039-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65187\/","title":{"rendered":"java\u6570\u7ec4\u51fd\u6570\u6709\u54ea\u4e9b 039"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u652f\u6301\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u957f\u5ea6\u83b7\u53d6\u3001\u5143\u7d20\u8bbf\u95ee\u3001\u5faa\u73af\u904d\u5386\u3001\u62f7\u8d1d\u3001\u6392\u5e8f\u3001\u641c\u7d22\u548c\u8f6c\u6362\u64cd\u4f5c\uff0c\u5305\u62ec\u521b\u5efa\u6570\u7ec4\u3001\u8bbf\u95ee\u5143\u7d20\u3001\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3001\u4f7f\u7528\u5faa\u73af\u548c\u679a\u4e3e\u904d\u5386\u3001\u521b\u5efa\u526f\u672c\u3001\u6392\u5e8f\u6570\u7ec4\u3001\u4f7f\u7528\u4e8c\u5206\u67e5\u627e\u6216 indexof() \u65b9\u6cd5\u641c\u7d22\u5143\u7d20\u3001\u5e76\u4f7f\u7528 arrays.tostring() \u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111210430146591.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u51fd\u6570\u6709\u54ea\u4e9b 039\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u51fd\u6570\u6709\u54ea\u4e9b 039\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u51fd\u6570<\/strong><\/p>\n<p><strong>1. \u521b\u5efa\u548c\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>int[] arr = new int[5]; \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6574\u578b\u6570\u7ec4\u3002<\/li>\n<li>arr = {1, 2, 3, 4, 5}; \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u5143\u7d20\u7684\u6574\u578b\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<p><strong>2. \u6570\u7ec4\u957f\u5ea6<\/strong><\/p>\n<ul>\n<li>arr.length \u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n<p><strong>3. \u6570\u7ec4\u5143\u7d20\u8bbf\u95ee<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>arr[0] \u8bbf\u95ee\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/li>\n<li>arr[arr.length &#8211; 1] \u8bbf\u95ee\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>4. \u6570\u7ec4\u5faa\u73af<\/strong><\/p>\n<ul>\n<li>for (int i = 0; i <\/li>\n<li>for-each \u5faa\u73af\uff1afor (int element : arr) { &#8230; }\u3002<\/li>\n<\/ul>\n<p><strong>5. \u6570\u7ec4\u62f7\u8d1d<\/strong><\/p>\n<ul>\n<li>Arrays.copyOf(arr, arr.length) \u521b\u5efa\u4e00\u4e2a\u5305\u542b\u6240\u6709\u5143\u7d20\u7684\u6570\u7ec4\u526f\u672c\u3002<\/li>\n<li>System.arraycopy(arr, 0, newArr, 0, arr.length); \u5c06\u6570\u7ec4\u4ece\u6307\u5b9a\u4f4d\u7f6e\u5f00\u59cb\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>6. \u6570\u7ec4\u6392\u5e8f<\/strong><\/p>\n<ul>\n<li>Arrays.sort(arr) \u5bf9\u6570\u7ec4\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n<li>Arrays.sort(arr, Collections.reverseOrder()) \u5bf9\u6570\u7ec4\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ul>\n<p><strong>7. \u6570\u7ec4\u641c\u7d22<\/strong><\/p>\n<ul>\n<li>Arrays.binarySearch(arr, element) \u4ee5\u4e8c\u5206\u67e5\u627e\u7684\u65b9\u5f0f\u5728\u6392\u5e8f\u6570\u7ec4\u4e2d\u67e5\u627e\u5143\u7d20\u3002<\/li>\n<li>Arrays.asList(arr).indexOf(element) \u5728\u65e0\u5e8f\u6570\u7ec4\u4e2d\u67e5\u627e\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>8. \u6570\u7ec4\u8f6c\u6362<\/strong><\/p>\n<ul>\n<li>Arrays.toString(arr) \u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002<\/li>\n<li>Arrays.stream(arr).map(&#8230;) \u5bf9\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5e94\u7528\u6620\u5c04\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u51fd\u6570\u6709\u54ea\u4e9b 039\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 \u6570\u7ec4\u652f\u6301\u521b\u5efa\u3001\u521d\u59cb\u5316\u3001\u957f\u5ea6\u83b7\u53d6\u3001\u5143\u7d20\u8bbf\u95ee\u3001\u5faa\u73af\u904d\u5386\u3001\u62f7\u8d1d\u3001\u6392\u5e8f\u3001\u641c\u7d22\u548c\u8f6c\u6362\u64cd\u4f5c\uff0c\u5305\u62ec\u521b\u5efa\u6570\u7ec4\u3001\u8bbf\u95ee\u5143\u7d20\u3001\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3001\u4f7f\u7528\u5faa\u73af\u548c\u679a\u4e3e\u904d\u5386\u3001\u521b\u5efa\u526f\u672c\u3001\u6392\u5e8f\u6570\u7ec4\u3001\u4f7f\u7528\u4e8c\u5206\u67e5\u627e\u6216 indexof() \u65b9\u6cd5\u641c\u7d22\u5143\u7d20\u3001\u5e76\u4f7f\u7528 arrays.tostring() \u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002 Java \u6570\u7ec4\u51fd\u6570 1. \u521b\u5efa\u548c\u521d\u59cb\u5316\u6570\u7ec4 int[] arr = new int[5]; \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6574\u578b\u6570\u7ec4\u3002 arr = {1, 2, 3, 4, 5}; \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u5143\u7d20\u7684\u6574\u578b\u6570\u7ec4\u3002 2. \u6570\u7ec4\u957f\u5ea6 arr.length \u8fd4\u56de\u6570\u7ec4\u7684\u957f\u5ea6\u3002 3. \u6570\u7ec4\u5143\u7d20\u8bbf\u95ee \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b arr[0] \u8bbf\u95ee\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002 arr[arr.length &#8211; 1] \u8bbf\u95ee\u6570\u7ec4\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002 4. \u6570\u7ec4\u5faa\u73af for (int i = 0; i for-each \u5faa\u73af\uff1afor (int element : arr) [&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-65187","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65187","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=65187"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65187\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}