{"id":37064,"date":"2024-11-26T17:50:29","date_gmt":"2024-11-26T09:50:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37064\/"},"modified":"2024-11-26T17:50:29","modified_gmt":"2024-11-26T09:50:29","slug":"%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e5%85%83%e7%b4%a0-java","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37064\/","title":{"rendered":"\u6570\u7ec4\u600e\u4e48\u5220\u9664\u5143\u7d20 java"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyofrange() \u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u4e0d\u5305\u542b\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u90e8\u5206\uff0c\u8df3\u8fc7\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a arraylist\uff0c\u7136\u540e\u4f7f\u7528 remove() \u5220\u9664\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111300370454824.jpg\" class=\"aligncenter\" title=\"\u6570\u7ec4\u600e\u4e48\u5220\u9664\u5143\u7d20 java\u63d2\u56fe\" alt=\"\u6570\u7ec4\u600e\u4e48\u5220\u9664\u5143\u7d20 java\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5bf9\u8c61\u96c6\u5408\u3002\u8981\u5220\u9664\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Arrays.copyOfRange() \u65b9\u6cd5<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\uff0c\u6392\u9664\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\nint[] newArray = Arrays.copyOfRange(originalArray, 0, 4);\n\/\/ newArray \u5c06\u5305\u542b\u5143\u7d20 [1, 2, 3, 4]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<p>\u6b64\u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff0c\u540c\u65f6\u8df3\u8fc7\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\nint[] newArray = new int[originalArray.length - 1];\nSystem.arraycopy(originalArray, 0, newArray, 0, 3);\nSystem.arraycopy(originalArray, 4, newArray, 3, 1);\n\/\/ newArray \u5c06\u5305\u542b\u5143\u7d20 [1, 2, 3, 5]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 ArrayList<\/strong><\/p>\n<p>\u867d\u7136\u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u4f46 ArrayList \u662f\u52a8\u6001\u5927\u5c0f\u7684\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a ArrayList\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u5220\u9664\u5143\u7d20\uff1a<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\nArrayList&lt;Integer&gt; arrayList = new ArrayList&lt;&gt;(Arrays.asList(originalArray));\narrayList.remove(2); \/\/ \u5220\u9664\u7d22\u5f15\u4e3a 2 \u7684\u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a<\/strong><\/p>\n<ul>\n<li>\u4ee5\u4e0a\u65b9\u6cd5\u53ea\u4f1a\u8fd4\u56de\u4e00\u4e2a\u4e0d\u5305\u542b\u6307\u5b9a\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u6216 ArrayList\uff0c\u4f46\u4e0d\u4f1a\u4fee\u6539\u539f\u59cb\u6570\u7ec4\u3002<\/li>\n<li>\u5bf9\u4e8e\u539f\u59cb\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\u8986\u76d6\u6307\u5b9a\u5143\u7d20\uff0c\u66ff\u6362\u5b83\u4eec\u3002<\/li>\n<li>\u5bf9\u4e8e ArrayList\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 remove() \u65b9\u6cd5\u76f4\u63a5\u4ece\u5217\u8868\u4e2d\u5220\u9664\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6570\u7ec4\u600e\u4e48\u5220\u9664\u5143\u7d20 java\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 \u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyofrange() \u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u4e0d\u5305\u542b\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u90e8\u5206\uff0c\u8df3\u8fc7\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a arraylist\uff0c\u7136\u540e\u4f7f\u7528 remove() \u5220\u9664\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5bf9\u8c61\u96c6\u5408\u3002\u8981\u5220\u9664\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 Arrays.copyOfRange() \u65b9\u6cd5 \u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5176\u4e2d\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\uff0c\u6392\u9664\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] originalArray = {1, 2, 3, 4, 5}; int[] newArray = Arrays.copyOfRange(originalArray, 0, 4); \/\/ newArray \u5c06\u5305\u542b\u5143\u7d20 [1, 2, 3, 4] \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u6b64\u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u7684\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff0c\u540c\u65f6\u8df3\u8fc7\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002 int[] originalArray = {1, 2, 3, [&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-37064","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37064","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=37064"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37064\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}