{"id":36898,"date":"2024-11-26T09:51:52","date_gmt":"2024-11-26T01:51:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36898\/"},"modified":"2024-11-26T09:51:52","modified_gmt":"2024-11-26T01:51:52","slug":"java%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0%e6%80%8e%e4%b9%88%e6%8f%92","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36898\/","title":{"rendered":"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u63d2"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u7684\u65b9\u6cd5\u5305\u62ec\uff1a1. \u521b\u5efa\u6216\u83b7\u53d6\u8981\u63d2\u5165\u5143\u7d20\u7684\u6570\u7ec4\uff1b2. \u786e\u5b9a\u8981\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e\uff1b3. \u4f7f\u7528 system.arraycopy() \u521b\u5efa\u65b0\u6570\u7ec4\uff1b4. \u5c06\u65b0\u5143\u7d20\u63d2\u5165\u65b0\u6570\u7ec4\uff1b5. \u5c06\u65b0\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111221155572997.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u63d2\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u63d2\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<p><strong>1. \u521b\u5efa\u6216\u83b7\u53d6\u8981\u63d2\u5165\u5143\u7d20\u7684\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u6216\u4f7f\u7528\u73b0\u6709\u7684\u6570\u7ec4\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<p><strong>2. \u786e\u5b9a\u8981\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u786e\u5b9a\u8981\u5728\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u5373\u7d22\u5f15\uff09\u3002<\/li>\n<\/ul>\n<p><strong>3. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u957f\u5ea6\u6bd4\u539f\u59cb\u6570\u7ec4\u5927 1\u3002<\/li>\n<li>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u524d\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>4. \u5c06\u65b0\u5143\u7d20\u63d2\u5165\u65b0\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>\u5728\u8981\u63d2\u5165\u65b0\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u5904\uff0c\u5c06\u65b0\u5143\u7d20\u8d4b\u503c\u7ed9\u65b0\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<p><strong>5. \u5c06\u65b0\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint index = 2;\nint elementToInsert = 10;\n\n\/\/ \u521b\u5efa\u65b0\u6570\u7ec4\nint[] newArr = new int[arr.length + 1];\n\n\/\/ \u590d\u5236\u539f\u59cb\u6570\u7ec4\u7684\u524d\u534a\u90e8\u5206\nSystem.arraycopy(arr, 0, newArr, 0, index);\n\n\/\/ \u63d2\u5165\u65b0\u5143\u7d20\nnewArr[index] = elementToInsert;\n\n\/\/ \u590d\u5236\u539f\u59cb\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\nSystem.arraycopy(arr, index, newArr, index + 1, arr.length - index);\n\n\/\/ \u65b0\u6570\u7ec4\u4e2d\u5305\u542b\u63d2\u5165\u7684\u65b0\u5143\u7d20\nSystem.out.println(Arrays.toString(newArr));<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u8f93\u51fa\uff1a<\/strong><\/p>\n<pre>[1, 2, 10, 3, 4, 5]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u5143\u7d20\u600e\u4e48\u63d2\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u7684\u65b9\u6cd5\u5305\u62ec\uff1a1. \u521b\u5efa\u6216\u83b7\u53d6\u8981\u63d2\u5165\u5143\u7d20\u7684\u6570\u7ec4\uff1b2. \u786e\u5b9a\u8981\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e\uff1b3. \u4f7f\u7528 system.arraycopy() \u521b\u5efa\u65b0\u6570\u7ec4\uff1b4. \u5c06\u65b0\u5143\u7d20\u63d2\u5165\u65b0\u6570\u7ec4\uff1b5. \u5c06\u65b0\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20 \u5728 Java \u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\uff1a 1. \u521b\u5efa\u6216\u83b7\u53d6\u8981\u63d2\u5165\u5143\u7d20\u7684\u6570\u7ec4 \u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u6216\u4f7f\u7528\u73b0\u6709\u7684\u6570\u7ec4\u53d8\u91cf\u3002 2. \u786e\u5b9a\u8981\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u786e\u5b9a\u8981\u5728\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u5373\u7d22\u5f15\uff09\u3002 3. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4 \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u957f\u5ea6\u6bd4\u539f\u59cb\u6570\u7ec4\u5927 1\u3002 \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u524d\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 4. \u5c06\u65b0\u5143\u7d20\u63d2\u5165\u65b0\u6570\u7ec4 \u5728\u8981\u63d2\u5165\u65b0\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u5904\uff0c\u5c06\u65b0\u5143\u7d20\u8d4b\u503c\u7ed9\u65b0\u6570\u7ec4\u3002 5. \u5c06\u65b0\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4 \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u540e\u534a\u90e8\u5206\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a int[] arr = {1, 2, 3, 4, 5}; int index = 2; [&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-36898","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36898","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=36898"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36898\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}