{"id":39324,"date":"2024-11-26T17:59:58","date_gmt":"2024-11-26T09:59:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39324\/"},"modified":"2024-11-26T17:59:58","modified_gmt":"2024-11-26T09:59:58","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%8e%bb%e6%8e%89%e4%b8%80%e4%b8%aa","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39324\/","title":{"rendered":"java\u4e2d\u6570\u7ec4\u600e\u4e48\u53bb\u6389\u4e00\u4e2a"},"content":{"rendered":"<blockquote><p>\n  \u5728java\u4e2d\uff0c\u5220\u9664\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\uff1a\u4f7f\u7528system.arraycopy\u65b9\u6cd5\uff0c\u4ece\u6307\u5b9a\u4f4d\u7f6e\u590d\u5236\u5143\u7d20\u3002\u4f7f\u7528arrays.copyofrange\u65b9\u6cd5\uff0c\u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u4f7f\u7528arraylist\uff0c\u4e00\u79cd\u52a8\u6001\u6570\u636e\u7ed3\u6784\uff0c\u65b9\u4fbf\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111606280874924.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u6570\u7ec4\u600e\u4e48\u53bb\u6389\u4e00\u4e2a\u63d2\u56fe\" alt=\"java\u4e2d\u6570\u7ec4\u600e\u4e48\u53bb\u6389\u4e00\u4e2a\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u4f7f\u7528\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u6570\u636e\u7684\u5e38\u89c1\u65b9\u5f0f\u3002\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u4e00\u4e2a\u5143\u7d20\uff0c\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528System.arraycopy\u65b9\u6cd5<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\nint[] arr = {1, 2, 3, 4, 5};\n\n\/\/ \u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d203\nSystem.arraycopy(arr, 2, arr, 1, arr.length - 2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>System.arraycopy\u65b9\u6cd5\u4ece\u6307\u5b9a\u4f4d\u7f6e\u5f00\u59cb\u590d\u5236\u6570\u7ec4\u5143\u7d20\uff0c\u8986\u76d6\u539f\u6709\u5143\u7d20\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4ece\u7d22\u5f152\u5904\u590d\u5236\u5143\u7d20\uff0c\u8986\u76d6\u7d22\u5f151\u5904\u539f\u6709\u7684\u5143\u7d20\uff0c\u4ece\u800c\u5220\u9664\u4e86\u5143\u7d203\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>2. \u4f7f\u7528Arrays.copyOfRange\u65b9\u6cd5<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\nint[] arr = {1, 2, 3, 4, 5};\n\n\/\/ \u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d203\narr = Arrays.copyOfRange(arr, 0, 2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>Arrays.copyOfRange\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u4ece\u7d22\u5f150\u52302\u7684\u6570\u7ec4\u526f\u672c\uff0c\u4ece\u800c\u5220\u9664\u4e86\u5143\u7d203\u3002<\/p>\n<p><strong>3. \u4f7f\u7528ArrayList<\/strong><\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2aArrayList\nArrayList&lt;Integer&gt; list = new ArrayList&lt;&gt;();\nlist.add(1);\nlist.add(2);\nlist.add(3);\nlist.add(4);\nlist.add(5);\n\n\/\/ \u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d203\nlist.remove(2);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>ArrayList\u662f\u4e00\u79cd\u52a8\u6001\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528remove\u65b9\u6cd5\u5220\u9664\u4e86\u7d22\u5f152\u5904\u7684\u5143\u7d203\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u4e0a\u8ff0\u65b9\u6cd5\u90fd\u662f\u901a\u8fc7\u91cd\u65b0\u521b\u5efa\u6570\u7ec4\u6765\u5b9e\u73b0\u5143\u7d20\u5220\u9664\u7684\u3002<\/li>\n<li>Java\u6570\u7ec4\u7684\u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u4e0d\u80fd\u76f4\u63a5\u51cf\u5c11\u6570\u7ec4\u957f\u5ea6\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u6570\u7ec4\u600e\u4e48\u53bb\u6389\u4e00\u4e2a\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>\u5728java\u4e2d\uff0c\u5220\u9664\u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\uff1a\u4f7f\u7528system.arraycopy\u65b9\u6cd5\uff0c\u4ece\u6307\u5b9a\u4f4d\u7f6e\u590d\u5236\u5143\u7d20\u3002\u4f7f\u7528arrays.copyofrange\u65b9\u6cd5\uff0c\u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u4f7f\u7528arraylist\uff0c\u4e00\u79cd\u52a8\u6001\u6570\u636e\u7ed3\u6784\uff0c\u65b9\u4fbf\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002 Java\u4e2d\u5220\u9664\u6570\u7ec4\u5143\u7d20 \u5728Java\u4e2d\uff0c\u4f7f\u7528\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u6570\u636e\u7684\u5e38\u89c1\u65b9\u5f0f\u3002\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u4e00\u4e2a\u5143\u7d20\uff0c\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff1a 1. \u4f7f\u7528System.arraycopy\u65b9\u6cd5 \/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 int[] arr = {1, 2, 3, 4, 5}; \/\/ \u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d203 System.arraycopy(arr, 2, arr, 1, arr.length &#8211; 2); \u767b\u5f55\u540e\u590d\u5236 System.arraycopy\u65b9\u6cd5\u4ece\u6307\u5b9a\u4f4d\u7f6e\u5f00\u59cb\u590d\u5236\u6570\u7ec4\u5143\u7d20\uff0c\u8986\u76d6\u539f\u6709\u5143\u7d20\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4ece\u7d22\u5f152\u5904\u590d\u5236\u5143\u7d20\uff0c\u8986\u76d6\u7d22\u5f151\u5904\u539f\u6709\u7684\u5143\u7d20\uff0c\u4ece\u800c\u5220\u9664\u4e86\u5143\u7d203\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u4f7f\u7528Arrays.copyOfRange\u65b9\u6cd5 \/\/ \u521b\u5efa\u4e00\u4e2a\u6570\u7ec4 int[] arr = {1, 2, 3, 4, 5}; \/\/ \u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d203 arr = Arrays.copyOfRange(arr, 0, 2); \u767b\u5f55\u540e\u590d\u5236 Arrays.copyOfRange\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u4ece\u7d22\u5f150\u52302\u7684\u6570\u7ec4\u526f\u672c\uff0c\u4ece\u800c\u5220\u9664\u4e86\u5143\u7d203\u3002 3. \u4f7f\u7528ArrayList \/\/ \u521b\u5efa\u4e00\u4e2aArrayList ArrayList&lt;Integer&gt; list = [&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-39324","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39324","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=39324"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39324\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}