{"id":39745,"date":"2024-11-26T10:55:50","date_gmt":"2024-11-26T02:55:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39745\/"},"modified":"2024-11-26T10:55:50","modified_gmt":"2024-11-26T02:55:50","slug":"java%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e6%9f%90%e4%b8%aa%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39745\/","title":{"rendered":"java\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20"},"content":{"rendered":"

\n \u4ece java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyofrange() \u521b\u5efa\u5305\u542b\u6307\u5b9a\u8303\u56f4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u90e8\u5206\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u4e0d\u5305\u542b\u8981\u5220\u9664\u7684\u5143\u7d20\u3002\u5bf9\u4e8e\u987a\u5e8f\u91cd\u8981\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 arraylist \u8f7b\u677e\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20<\/strong><\/p>\n

\u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u6709\u51e0\u79cd\u65b9\u6cd5\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u5927\u5c0f\u3001\u5143\u7d20\u7684\u4f4d\u7f6e\u4ee5\u53ca\u5220\u9664\u8981\u6c42\u3002<\/p>\n

1. \u4f7f\u7528 Arrays.copyOfRange() \u65b9\u6cd5<\/strong><\/p>\n

Arrays.copyOfRange() \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4ece\u6307\u5b9a\u8303\u56f4\uff08\u5305\u62ec\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\uff09\u5185\u7684\u5143\u7d20\u3002\u901a\u8fc7\u6307\u5b9a\u5f00\u59cb\u7d22\u5f15\u4e3a\u8981\u5220\u9664\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u7ed3\u675f\u7d22\u5f15\u4e3a\u8981\u5220\u9664\u5143\u7d20\u7684\u4e0b\u4e00\u4e2a\u7d22\u5f15\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e0d\u5305\u542b\u8be5\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] originalArray = {1, 2, 3, 4, 5};\nint indexToDelete = 2;\nint[] newArray = Arrays.copyOfRange(originalArray, 0, indexToDelete);\nnewArray = Arrays.copyOfRange(originalArray, indexToDelete + 1, originalArray.length);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n
System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u901a\u8fc7\u5c06\u8981\u5220\u9664\u7684\u5143\u7d20\u540e\u9762\u7684\u6240\u6709\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e0d\u5305\u542b\u8be5\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002<\/p>\n
int[] originalArray = {1, 2, 3, 4, 5};\nint indexToDelete = 2;\nint[] newArray = new int[originalArray.length - 1];\nSystem.arraycopy(originalArray, 0, newArray, 0, indexToDelete);\nSystem.arraycopy(originalArray, indexToDelete + 1, newArray, indexToDelete, newArray.length - indexToDelete);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u4f7f\u7528 ArrayList<\/strong><\/p>\n
\u5982\u679c\u6570\u7ec4\u5143\u7d20\u7684\u987a\u5e8f\u5f88\u91cd\u8981\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528 ArrayList \u7c7b\u3002ArrayList \u662f\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002<\/p>\n
ArrayList<Integer> list = new ArrayList<>(Arrays.asList(1, 2, 3, 4, 5));\nlist.remove(indexToDelete);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u5176\u4ed6\u65b9\u6cd5<\/strong><\/p>\n
\u8fd8\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\uff0c\u4f8b\u5982\u4f7f\u7528 BitSet \u6216\u4f7f\u7528\u53cd\u5c04\u3002\u4f46\u662f\uff0c\u4e0a\u9762\u5217\u51fa\u7684\u65b9\u6cd5\u901a\u5e38\u662f\u6700\u7b80\u5355\u7684\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u67d0\u4e2a\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":"
\u4ece java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyofrange() \u521b\u5efa\u5305\u542b\u6307\u5b9a\u8303\u56f4\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002\u4f7f\u7528 system.arraycopy() \u590d\u5236\u6570\u7ec4\u90e8\u5206\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u4e0d\u5305\u542b\u8981\u5220\u9664\u7684\u5143\u7d20\u3002\u5bf9\u4e8e\u987a\u5e8f\u91cd\u8981\u7684\u5143\u7d20\uff0c\u53ef\u4ee5\u4f7f\u7528 arraylist \u8f7b\u677e\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002 \u5982\u4f55\u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20 \u4ece Java \u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20\u6709\u51e0\u79cd\u65b9\u6cd5\u3002\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u5927\u5c0f\u3001\u5143\u7d20\u7684\u4f4d\u7f6e\u4ee5\u53ca\u5220\u9664\u8981\u6c42\u3002 1. \u4f7f\u7528 Arrays.copyOfRange() \u65b9\u6cd5 Arrays.copyOfRange() \u65b9\u6cd5\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u8be5\u6570\u7ec4\u5305\u542b\u4ece\u6307\u5b9a\u8303\u56f4\uff08\u5305\u62ec\u5f00\u59cb\u7d22\u5f15\u548c\u7ed3\u675f\u7d22\u5f15\uff09\u5185\u7684\u5143\u7d20\u3002\u901a\u8fc7\u6307\u5b9a\u5f00\u59cb\u7d22\u5f15\u4e3a\u8981\u5220\u9664\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u7ed3\u675f\u7d22\u5f15\u4e3a\u8981\u5220\u9664\u5143\u7d20\u7684\u4e0b\u4e00\u4e2a\u7d22\u5f15\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e0d\u5305\u542b\u8be5\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] originalArray = {1, 2, 3, 4, 5}; int indexToDelete = 2; int[] newArray = Arrays.copyOfRange(originalArray, 0, indexToDelete); newArray = Arrays.copyOfRange(originalArray, indexToDelete + 1, originalArray.length); \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 System.arraycopy() \u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u7ec4\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u901a\u8fc7\u5c06\u8981\u5220\u9664\u7684\u5143\u7d20\u540e\u9762\u7684\u6240\u6709\u5143\u7d20\u590d\u5236\u5230\u65b0\u6570\u7ec4\u4e2d\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e0d\u5305\u542b\u8be5\u5143\u7d20\u7684\u65b0\u6570\u7ec4\u3002 int[] […]<\/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-39745","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39745","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=39745"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39745\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}