{"id":36904,"date":"2024-11-26T14:58:44","date_gmt":"2024-11-26T06:58:44","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36904\/"},"modified":"2024-11-26T14:58:44","modified_gmt":"2024-11-26T06:58:44","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%8a%a0%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36904\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u52a0\u5143\u7d20"},"content":{"rendered":"

\n java \u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\u7c7b\u4f3c\u529f\u80fd\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u548c\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\u3002\u4f7f\u7528\u53ef\u53d8\u5927\u5c0f\u7684 arraylist\uff0c\u53ef\u8f7b\u677e\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528\u53ef\u53d8\u5927\u5c0f\u7684 linkedlist\uff0c\u53ef\u5728\u5934\u90e8\u6216\u5c3e\u90e8\u5feb\u901f\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u5e76\u63d2\u5165\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u52a0\u5143\u7d20\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n

Java \u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u56fa\u5b9a\u5927\u5c0f\u540c\u7c7b\u578b\u5143\u7d20\u7684\u5bb9\u5668\u3002\u7531\u4e8e\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u5c31\u5df2\u7ecf\u786e\u5b9a\uff0c\u56e0\u6b64\u65e0\u6cd5\u76f4\u63a5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002\u4f46\u662f\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\uff1a<\/p>\n

1. \u521b\u5efa\u65b0\u6570\u7ec4<\/strong><\/p>\n

\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4ee5\u53ca\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n

int[] originalArray = {1, 2, 3};\nint[] newArray = new int[originalArray.length + 1];\n\n\/\/ \u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\nfor (int i = 0; i < originalArray.length; i++) {\n    newArray[i] = originalArray[i];\n}\n\n\/\/ \u6dfb\u52a0\u65b0\u5143\u7d20\nnewArray[newArray.length - 1] = 4;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 ArrayList<\/strong><\/p>\n
ArrayList \u662f Java \u4e2d\u4e00\u4e2a\u53ef\u53d8\u5927\u5c0f\u7684\u5143\u7d20\u5217\u8868\u3002\u5b83\u53ef\u4ee5\u8f7b\u677e\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002<\/p>\n
\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n
ArrayList<Integer> arrayList = new ArrayList<>(Arrays.asList(1, 2, 3));\narrayList.add(4);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u4f7f\u7528 LinkedList<\/strong><\/p>\n
LinkedList \u662f\u53e6\u4e00\u4e2a\u53ef\u53d8\u5927\u5c0f\u7684\u5143\u7d20\u5217\u8868\uff0c\u5b83\u5141\u8bb8\u5728\u5934\u90e8\u6216\u5c3e\u90e8\u5feb\u901f\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002<\/p>\n
\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n
LinkedList<Integer> linkedList = new LinkedList<>(Arrays.asList(1, 2, 3));\nlinkedList.add(4);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u4f7f\u7528 System.arraycopy()<\/strong><\/p>\n
System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u90e8\u5206\u6216\u5168\u90e8\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u5b83\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5411\u6570\u7ec4\u4e2d\u63d2\u5165\u5143\u7d20\u3002<\/p>\n
\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n
int[] originalArray = {1, 2, 3};\nint[] newArray = new int[originalArray.length + 1];\n\n\/\/ \u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\nSystem.arraycopy(originalArray, 0, newArray, 0, originalArray.length);\n\n\/\/ \u5728\u539f\u59cb\u6570\u7ec4\u672b\u5c3e\u63d2\u5165\u65b0\u5143\u7d20\nnewArray[newArray.length - 1] = 4;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u52a0\u5143\u7d20\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 \u6570\u7ec4\u65e0\u6cd5\u76f4\u63a5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f46\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\u7c7b\u4f3c\u529f\u80fd\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u5143\u7d20\u548c\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\u3002\u4f7f\u7528\u53ef\u53d8\u5927\u5c0f\u7684 arraylist\uff0c\u53ef\u8f7b\u677e\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528\u53ef\u53d8\u5927\u5c0f\u7684 linkedlist\uff0c\u53ef\u5728\u5934\u90e8\u6216\u5c3e\u90e8\u5feb\u901f\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u5e76\u63d2\u5165\u5143\u7d20\u3002 Java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 Java \u6570\u7ec4\u662f\u4e00\u79cd\u7528\u4e8e\u5b58\u50a8\u56fa\u5b9a\u5927\u5c0f\u540c\u7c7b\u578b\u5143\u7d20\u7684\u5bb9\u5668\u3002\u7531\u4e8e\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u5c31\u5df2\u7ecf\u786e\u5b9a\uff0c\u56e0\u6b64\u65e0\u6cd5\u76f4\u63a5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002\u4f46\u662f\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\uff1a 1. \u521b\u5efa\u65b0\u6570\u7ec4 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4ee5\u53ca\u8981\u6dfb\u52a0\u7684\u65b0\u5143\u7d20\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4ee3\u7801\u793a\u4f8b\uff1a int[] originalArray = {1, 2, 3}; int[] newArray = new int[originalArray.length + 1]; \/\/ \u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20 for (int i = 0; i < originalArray.length; i++) { newArray[i] = originalArray[i]; } \/\/ \u6dfb\u52a0\u65b0\u5143\u7d20 newArray[newArray.length – 1] = 4; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 ArrayList […]<\/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-36904","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36904","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=36904"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36904\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}