{"id":38076,"date":"2024-11-26T09:51:12","date_gmt":"2024-11-26T01:51:12","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38076\/"},"modified":"2024-11-26T09:51:12","modified_gmt":"2024-11-26T01:51:12","slug":"java%e6%80%8e%e4%b9%88%e4%bb%8e%e6%95%b0%e7%bb%84%e4%b8%ad%e5%88%a0%e9%99%a4%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38076\/","title":{"rendered":"java\u600e\u4e48\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff0c\u5c06\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u4e0d\u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u6548\u7387\u9ad8\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff0c\u521b\u5efa\u6307\u5b9a\u8303\u56f4\u7684\u526f\u672c\uff0c\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 arraylist\uff0c\u8c03\u7528 remove() \u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\uff0c\u904d\u5386\u6570\u7ec4\u5e76\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111316313062274.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u63d2\u56fe\" alt=\"java\u600e\u4e48\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<p>\u8be5\u65b9\u6cd5\u5c06\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u4ece\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u7528\u6765\u5220\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u5220\u9664\u7d22\u5f15\u4e3a 3 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nSystem.arraycopy(arr, 4, arr, 3, arr.length - 4);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u7684\u597d\u5904\u662f\u6548\u7387\u9ad8\uff0c\u5e76\u4e14\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u4ece\u800c\u8282\u7701\u5185\u5b58\u3002<\/p>\n<p><strong>2. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<p>\u8be5\u65b9\u6cd5\u521b\u5efa\u6307\u5b9a\u8303\u56f4\u5185\u5143\u7d20\u7684\u526f\u672c\uff0c\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u3002\u53ef\u4ee5\u901a\u8fc7\u6b64\u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\narr = Arrays.copyOf(arr, arr.length - 1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 ArrayList<\/strong><\/p>\n<p>ArrayList \u662f\u4e00\u4e2a\u53ef\u53d8\u6570\u7ec4\uff0c\u5b83\u5141\u8bb8\u52a8\u6001\u6dfb\u52a0\u3001\u5220\u9664\u548c\u63d2\u5165\u5143\u7d20\u3002\u8981\u4ece ArrayList \u4e2d\u5220\u9664\u5143\u7d20\uff0c\u53ef\u4ee5\u8c03\u7528 remove() \u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>ArrayList&lt;Integer&gt; list = new ArrayList&lt;&gt;(Arrays.asList(1, 2, 3, 4, 5));\nlist.remove(3);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 for \u5faa\u73af<\/strong><\/p>\n<p>\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint indexToRemove = 3;\nint[] newArr = new int[arr.length - 1];\n\nfor (int i = 0, j = 0; i &lt; arr.length; i++) {\n    if (i == indexToRemove) {\n        continue;\n    }\n    newArr[j] = arr[i];\n    j++;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u56db\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5\u6709\u6548\u5730\u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\uff0c\u5177\u4f53\u4f7f\u7528\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u7279\u5b9a\u9700\u6c42\u548c\u6027\u80fd\u8003\u8651\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\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":"<p>\u5728 java \u4e2d\uff0c\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff0c\u5c06\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u4e0d\u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u6548\u7387\u9ad8\u3002\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff0c\u521b\u5efa\u6307\u5b9a\u8303\u56f4\u7684\u526f\u672c\uff0c\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 arraylist\uff0c\u8c03\u7528 remove() \u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\uff0c\u904d\u5386\u6570\u7ec4\u5e76\u8df3\u8fc7\u8981\u5220\u9664\u7684\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\u3002\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u8be5\u65b9\u6cd5\u5c06\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u4ece\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u53ef\u4ee5\u7528\u6765\u5220\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u5220\u9664\u7d22\u5f15\u4e3a 3 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5}; System.arraycopy(arr, 4, arr, 3, arr.length &#8211; 4); \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u79cd\u65b9\u6cd5\u7684\u597d\u5904\u662f\u6548\u7387\u9ad8\uff0c\u5e76\u4e14\u4e0d\u4f1a\u521b\u5efa\u65b0\u7684\u6570\u7ec4\uff0c\u4ece\u800c\u8282\u7701\u5185\u5b58\u3002 2. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5 \u8be5\u65b9\u6cd5\u521b\u5efa\u6307\u5b9a\u8303\u56f4\u5185\u5143\u7d20\u7684\u526f\u672c\uff0c\u5e76\u8fd4\u56de\u65b0\u6570\u7ec4\u3002\u53ef\u4ee5\u901a\u8fc7\u6b64\u65b9\u6cd5\u5220\u9664\u5143\u7d20\u3002\u4f8b\u5982\uff1a int[] arr = {1, 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-38076","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38076","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=38076"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38076\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}