{"id":66432,"date":"2025-05-03T13:56:51","date_gmt":"2025-05-03T05:56:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66432\/"},"modified":"2025-05-03T13:56:51","modified_gmt":"2025-05-03T05:56:51","slug":"java%e6%95%b0%e7%bb%84%e4%b8%8b%e6%a0%87%e6%80%8e%e4%b9%88%e5%8f%af%e4%bb%a5%e5%be%80%e5%90%8e%e7%a7%bb-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66432\/","title":{"rendered":"java\u6570\u7ec4\u4e0b\u6807\u600e\u4e48\u53ef\u4ee5\u5f80\u540e\u79fb"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u4e2d\u53ef\u901a\u8fc7\u4ee5\u4e0b 3 \u79cd\u65b9\u6cd5\u5c06\u4e0b\u6807\u5411\u540e\u79fb\u52a8\uff1a\u4f7f\u7528\u6570\u7ec4\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u591a\u4e00\u4e2a\u5143\u7d20\u7684\u65b0\u6570\u7ec4\uff0c\u9010\u4e2a\u5143\u7d20\u5411\u540e\u79fb\u52a8\u3002\u4f7f\u7528\u5faa\u73af\u548c\u4e34\u65f6\u53d8\u91cf\uff1a\u5c06\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5b58\u50a8\u4e3a\u4e34\u65f6\u53d8\u91cf\uff0c\u9010\u4e2a\u5143\u7d20\u5411\u540e\u79fb\u52a8\uff0c\u6700\u540e\u5c06\u4e34\u65f6\u53d8\u91cf\u8d4b\u503c\u7ed9\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy \u65b9\u6cd5\uff1a\u901a\u8fc7\u6307\u5b9a\u6e90\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u548c\u79fb\u52a8\u5143\u7d20\u7684\u8303\u56f4\uff0c\u5c06\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111603341311238.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u4e0b\u6807\u600e\u4e48\u53ef\u4ee5\u5f80\u540e\u79fb\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u4e0b\u6807\u600e\u4e48\u53ef\u4ee5\u5f80\u540e\u79fb\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u4e0b\u6807\u5982\u4f55\u5411\u540e\u79fb\u52a8<\/strong><\/p>\n<p>\u5728 Java \u6570\u7ec4\u4e2d\uff0c\u4e0b\u6807\u8868\u793a\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u4ece 0 \u5f00\u59cb\u3002\u60f3\u8981\u5c06\u4e0b\u6807\u5411\u540e\u79fb\u52a8\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528\u6570\u7ec4\u62f7\u8d1d<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint[] shiftedArr = new int[arr.length + 1];\n\nfor (int i = 0; i &lt; arr.length; i++) {\n    shiftedArr[i + 1] = arr[i];\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cshiftedArr \u662f\u4e00\u4e2a\u6bd4 arr \u591a\u4e00\u4e2a\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u5c06 arr \u4e2d\u6bcf\u4e2a\u5143\u7d20\u5411 shiftedArr \u4e2d\u7684\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u79fb\u52a8\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528\u5faa\u73af\u548c\u4e34\u65f6\u53d8\u91cf<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint temp = arr[arr.length - 1];\n\nfor (int i = arr.length - 1; i &gt; 0; i--) {\n    arr[i] = arr[i - 1];\n}\n\narr[0] = temp;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6570\u7ec4\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u4e34\u65f6\u5b58\u50a8\u5728 temp \u4e2d\u3002\u7136\u540e\uff0c\u4ece\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5f00\u59cb\uff0c\u5c06\u6bcf\u4e2a\u5143\u7d20\u5411\u540e\u79fb\u52a8\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u6700\u540e\u5c06 temp \u8d4b\u503c\u7ed9\u6570\u7ec4\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002<\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 System.arraycopy \u65b9\u6cd5<\/strong><\/p>\n<pre>int[] arr = {1, 2, 3, 4, 5};\nint[] shiftedArr = new int[arr.length + 1];\n\nSystem.arraycopy(arr, 0, shiftedArr, 1, arr.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>System.arraycopy \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5c06 arr \u4e2d\u6240\u6709\u5143\u7d20\u590d\u5236\u5230 shiftedArr \u4e2d\uff0c\u4ece\u7b2c\u4e8c\u4e2a\u5143\u7d20\u4f4d\u7f6e\u5f00\u59cb\u3002<\/p>\n<p>\u4f7f\u7528\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u60c5\u51b5\u548c\u6548\u7387\u7684\u8003\u8651\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u4e0b\u6807\u600e\u4e48\u53ef\u4ee5\u5f80\u540e\u79fb\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>java \u6570\u7ec4\u4e2d\u53ef\u901a\u8fc7\u4ee5\u4e0b 3 \u79cd\u65b9\u6cd5\u5c06\u4e0b\u6807\u5411\u540e\u79fb\u52a8\uff1a\u4f7f\u7528\u6570\u7ec4\u62f7\u8d1d\uff1a\u521b\u5efa\u4e00\u4e2a\u6bd4\u539f\u59cb\u6570\u7ec4\u591a\u4e00\u4e2a\u5143\u7d20\u7684\u65b0\u6570\u7ec4\uff0c\u9010\u4e2a\u5143\u7d20\u5411\u540e\u79fb\u52a8\u3002\u4f7f\u7528\u5faa\u73af\u548c\u4e34\u65f6\u53d8\u91cf\uff1a\u5c06\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5b58\u50a8\u4e3a\u4e34\u65f6\u53d8\u91cf\uff0c\u9010\u4e2a\u5143\u7d20\u5411\u540e\u79fb\u52a8\uff0c\u6700\u540e\u5c06\u4e34\u65f6\u53d8\u91cf\u8d4b\u503c\u7ed9\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy \u65b9\u6cd5\uff1a\u901a\u8fc7\u6307\u5b9a\u6e90\u6570\u7ec4\u3001\u76ee\u6807\u6570\u7ec4\u548c\u79fb\u52a8\u5143\u7d20\u7684\u8303\u56f4\uff0c\u5c06\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\u3002 Java \u6570\u7ec4\u4e0b\u6807\u5982\u4f55\u5411\u540e\u79fb\u52a8 \u5728 Java \u6570\u7ec4\u4e2d\uff0c\u4e0b\u6807\u8868\u793a\u5143\u7d20\u7684\u4f4d\u7f6e\uff0c\u4ece 0 \u5f00\u59cb\u3002\u60f3\u8981\u5c06\u4e0b\u6807\u5411\u540e\u79fb\u52a8\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\uff1a \u65b9\u6cd5 1\uff1a\u4f7f\u7528\u6570\u7ec4\u62f7\u8d1d int[] arr = {1, 2, 3, 4, 5}; int[] shiftedArr = new int[arr.length + 1]; for (int i = 0; i &lt; arr.length; i++) { shiftedArr[i + 1] = arr[i]; } \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cshiftedArr \u662f\u4e00\u4e2a\u6bd4 arr \u591a\u4e00\u4e2a\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u5c06 arr \u4e2d\u6bcf\u4e2a\u5143\u7d20\u5411 shiftedArr \u4e2d\u7684\u4e0b\u4e00\u4e2a\u4f4d\u7f6e\u79fb\u52a8\u3002 [&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-66432","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66432","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=66432"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66432\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}