{"id":36731,"date":"2024-11-26T10:24:26","date_gmt":"2024-11-26T02:24:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36731\/"},"modified":"2024-11-26T10:24:26","modified_gmt":"2024-11-26T02:24:26","slug":"java%e6%80%8e%e4%b9%88%e6%8f%92%e5%85%a5%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36731\/","title":{"rendered":"java\u600e\u4e48\u63d2\u5165\u6570\u7ec4"},"content":{"rendered":"

\n java \u4e2d\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u53ef\u4ee5\u63d2\u5165\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u5927 1 \u7684\u65b0\u6570\u7ec4\u3002\u5c06\u539f\u59cb\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff0c\u4ece\u63d2\u5165\u7d22\u5f15\u5904\u5f00\u59cb\u5c06\u539f\u59cb\u6570\u7ec4\u5411\u540e\u79fb\u52a8\u3002\u5c06\u8981\u63d2\u5165\u7684\u5143\u7d20\u653e\u5165\u6307\u5b9a\u7684\u7d22\u5f15\u5904\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u63d2\u5165\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u63d2\u5165\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u65b0\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u8be5\u65b0\u5143\u7d20\u88ab\u63d2\u5165\u5230\u6307\u5b9a\u7d22\u5f15\u5904\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

public static <T> T[] copyOf(T[] original, int newLength)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • original \u662f\u8981\u590d\u5236\u7684\u539f\u59cb\u6570\u7ec4\u3002<\/li>\n
  • newLength \u662f\u65b0\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
    \u8981\u63d2\u5165\u4e00\u4e2a\u5143\u7d20\uff0c\u6211\u4eec\u53ef\u4ee5\u4f20\u9012\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u5927 1 \u7684 newLength\uff0c\u5e76\u6307\u5b9a\u65b0\u5143\u7d20\u8981\u63d2\u5165\u7684\u7d22\u5f15\u3002<\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    int[] originalArray = {1, 3, 5, 7, 9};\nint indexToInsert = 2;\nint elementToInsert = 2;\n\nint[] newArray = Arrays.copyOf(originalArray, originalArray.length + 1);\nSystem.arraycopy(originalArray, indexToInsert, newArray, indexToInsert + 1, originalArray.length - indexToInsert);\nnewArray[indexToInsert] = elementToInsert;\n\n\/\/ \u6253\u5370\u65b0\u6570\u7ec4\nfor (int element : newArray) {\n    System.out.println(element);\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/p>\n
    1\n3\n2\n5\n7\n9<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5143\u7d20 2 \u88ab\u63d2\u5165\u5230\u7d22\u5f15 2 \u5904\uff0c\u4ece\u800c\u5c06\u539f\u59cb\u6570\u7ec4\u6269\u5c55\u4e3a\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u63d2\u5165\u7684\u5143\u7d20\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u63d2\u5165\u6570\u7ec4\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":"
    java \u4e2d\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\u53ef\u4ee5\u63d2\u5165\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u5927 1 \u7684\u65b0\u6570\u7ec4\u3002\u5c06\u539f\u59cb\u6570\u7ec4\u590d\u5236\u5230\u65b0\u6570\u7ec4\uff0c\u4ece\u63d2\u5165\u7d22\u5f15\u5904\u5f00\u59cb\u5c06\u539f\u59cb\u6570\u7ec4\u5411\u540e\u79fb\u52a8\u3002\u5c06\u8981\u63d2\u5165\u7684\u5143\u7d20\u653e\u5165\u6307\u5b9a\u7684\u7d22\u5f15\u5904\u3002 \u5982\u4f55\u5728 Java \u4e2d\u63d2\u5165\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u65b0\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u8be5\u65b0\u5143\u7d20\u88ab\u63d2\u5165\u5230\u6307\u5b9a\u7d22\u5f15\u5904\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a public static <T> T[] copyOf(T[] original, int newLength) \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a original \u662f\u8981\u590d\u5236\u7684\u539f\u59cb\u6570\u7ec4\u3002 newLength \u662f\u65b0\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u8981\u63d2\u5165\u4e00\u4e2a\u5143\u7d20\uff0c\u6211\u4eec\u53ef\u4ee5\u4f20\u9012\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u5927 1 \u7684 newLength\uff0c\u5e76\u6307\u5b9a\u65b0\u5143\u7d20\u8981\u63d2\u5165\u7684\u7d22\u5f15\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u793a\u4f8b\uff1a int[] originalArray = {1, 3, 5, 7, 9}; int indexToInsert = 2; int elementToInsert = 2; int[] newArray = Arrays.copyOf(originalArray, originalArray.length […]<\/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-36731","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36731","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=36731"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36731\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}