{"id":64304,"date":"2025-05-03T16:37:26","date_gmt":"2025-05-03T08:37:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64304\/"},"modified":"2025-05-03T16:37:26","modified_gmt":"2025-05-03T08:37:26","slug":"java%e9%87%8c%e9%9d%a2%e6%80%8e%e4%b9%88%e6%88%aa%e5%8f%96%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64304\/","title":{"rendered":"java\u91cc\u9762\u600e\u4e48\u622a\u53d6\u4e00\u4e2a\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\u622a\u53d6\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u4e09\u79cd\uff1asystem.arraycopy()\u3001arrays.copyofrange() \u548c\u65b0\u5efa\u6570\u7ec4\u3002system.arraycopy() \u5141\u8bb8\u5c06\u90e8\u5206\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff0carrays.copyofrange() \u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\uff0c\u800c\u65b0\u5efa\u6570\u7ec4\u5219\u9010\u4e2a\u590d\u5236\u5143\u7d20\u521b\u5efa\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/03\/2024110304222246271.jpg\" class=\"aligncenter\" title=\"java\u91cc\u9762\u600e\u4e48\u622a\u53d6\u4e00\u4e2a\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u91cc\u9762\u600e\u4e48\u622a\u53d6\u4e00\u4e2a\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u622a\u53d6\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u622a\u53d6\u6570\u7ec4\uff1a<\/p>\n<p><strong>1. System.arraycopy()<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u5141\u8bb8\u60a8\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u5b83\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u6e90\u6570\u7ec4<\/li>\n<li>\u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15<\/li>\n<li>\u76ee\u6807\u6570\u7ec4<\/li>\n<li>\u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15<\/li>\n<li>\u8981\u590d\u5236\u7684\u5143\u7d20\u6570<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u622a\u53d6\u4ece\u7d22\u5f15 1 \u5230\u7d22\u5f15 5 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5, 6, 7};\nint[] newArr = new int[5];\nSystem.arraycopy(arr, 1, newArr, 0, 5);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. Arrays.copyOfRange()<\/strong><\/p>\n<p>Arrays.copyOfRange() \u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u5b83\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a<\/p>\n<ul>\n<li>\u6e90\u6570\u7ec4<\/li>\n<li>\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u542b\uff09<\/li>\n<li>\u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u542b\uff09<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u622a\u53d6\u4ece\u7d22\u5f15 1 \u5230\u7d22\u5f15 5 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5, 6, 7};\nint[] newArr = Arrays.copyOfRange(arr, 1, 5);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u65b0\u5efa\u6570\u7ec4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u7b80\u5355\u7684\u7528\u4f8b\uff0c\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u521b\u5efa\u65b0\u6570\u7ec4\u5e76\u9010\u4e2a\u590d\u5236\u5143\u7d20\u3002\u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u622a\u53d6\u4ece\u7d22\u5f15 1 \u5230\u7d22\u5f15 5 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a<\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5, 6, 7};\nint[] newArr = new int[5];\nfor (int i = 1; i &lt; 5; i++) {\n    newArr[i - 1] = arr[i];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u91cc\u9762\u600e\u4e48\u622a\u53d6\u4e00\u4e2a\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\u622a\u53d6\u6570\u7ec4\u7684\u65b9\u6cd5\u6709\u4e09\u79cd\uff1asystem.arraycopy()\u3001arrays.copyofrange() \u548c\u65b0\u5efa\u6570\u7ec4\u3002system.arraycopy() \u5141\u8bb8\u5c06\u90e8\u5206\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff0carrays.copyofrange() \u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\uff0c\u800c\u65b0\u5efa\u6570\u7ec4\u5219\u9010\u4e2a\u590d\u5236\u5143\u7d20\u521b\u5efa\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u4f7f\u7528 Java \u622a\u53d6\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u622a\u53d6\u6570\u7ec4\uff1a 1. System.arraycopy() System.arraycopy() \u65b9\u6cd5\u5141\u8bb8\u60a8\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u5b83\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6e90\u6570\u7ec4 \u6e90\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15 \u76ee\u6807\u6570\u7ec4 \u76ee\u6807\u6570\u7ec4\u7684\u8d77\u59cb\u7d22\u5f15 \u8981\u590d\u5236\u7684\u5143\u7d20\u6570 \u4f8b\u5982\uff0c\u8981\u4ece\u6570\u7ec4 arr \u4e2d\u622a\u53d6\u4ece\u7d22\u5f15 1 \u5230\u7d22\u5f15 5 \u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\uff1a int[] arr = {1, 2, 3, 4, 5, 6, 7}; int[] newArr = new int[5]; System.arraycopy(arr, 1, newArr, 0, 5); \u767b\u5f55\u540e\u590d\u5236 2. Arrays.copyOfRange() Arrays.copyOfRange() \u65b9\u6cd5\u8fd4\u56de\u6307\u5b9a\u8303\u56f4\u5185\u7684\u6570\u7ec4\u526f\u672c\u3002\u5b83\u63a5\u53d7\u4ee5\u4e0b\u53c2\u6570\uff1a \u6e90\u6570\u7ec4 [&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-64304","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64304","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=64304"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64304\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}