{"id":38548,"date":"2024-11-26T17:55:54","date_gmt":"2024-11-26T09:55:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/38548\/"},"modified":"2024-11-26T17:55:54","modified_gmt":"2024-11-26T09:55:54","slug":"java%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e6%9f%90%e4%b8%aa%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/38548\/","title":{"rendered":"java\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e2a\u5143\u7d20"},"content":{"rendered":"

\n java \u4e2d\u4ece\u6570\u7ec4\u5220\u9664\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u9664\u76ee\u6807\u5143\u7d20\u5916\u7684\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff1a\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u8df3\u8fc7\u76ee\u6807\u5143\u7d20\u3002\u4f7f\u7528 arraylist\uff08\u66f4\u9002\u5408\u9891\u7e41\u4fee\u6539\uff09\uff1a\u4f7f\u7528 remove() \u65b9\u6cd5\u4ece arraylist \u4e2d\u5220\u9664\u76ee\u6807\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

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

\u5982\u4f55\u5728 Java \u4e2d\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u6709\u5e8f\u96c6\u5408\u3002\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u662f\u5e38\u89c1\u64cd\u4f5c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a<\/p>\n

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

\u6b64\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u9664\u8981\u5220\u9664\u5143\u7d20\u4e4b\u5916\u7684\u6240\u6709\u5143\u7d20\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

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

int[] newArray = Arrays.copyOf(originalArray, originalArray.length - 1);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b65\u9aa4\uff1a<\/strong><\/p>\n
    \n
  • \u786e\u5b9a\u8981\u5220\u9664\u7684\u5143\u7d20\u7d22\u5f15 index\u3002<\/li>\n
  • \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 newArray\uff0c\u957f\u5ea6\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf 1\u3002<\/li>\n
  • \u904d\u5386\u539f\u59cb\u6570\u7ec4\uff0c\u5c06\u6240\u6709\u5143\u7d20\u590d\u5236\u5230 newArray\uff0c\u4f46\u8df3\u8fc7\u7d22\u5f15 index \u5904\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n
    2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n
    \u6b64\u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
    System.arraycopy(originalArray, 0, newArray, 0, originalArray.length - 1);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6b65\u9aa4\uff1a<\/strong><\/p>\n
      \n
    • \u786e\u5b9a\u8981\u5220\u9664\u7684\u5143\u7d20\u7d22\u5f15 index\u3002<\/li>\n
    • \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 newArray\uff0c\u957f\u5ea6\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf 1\u3002<\/li>\n
    • \u8c03\u7528 System.arraycopy() \u65b9\u6cd5\uff0c\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u4ece\u7d22\u5f15 0 \u5230 index \u4f4d\u7f6e\u7684\u5143\u7d20\u590d\u5236\u5230 newArray\u3002<\/li>\n
    • \u540c\u6837\uff0c\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u4ece\u7d22\u5f15 index+1 \u5230\u7ed3\u675f\u7684\u5143\u7d20\u590d\u5236\u5230 newArray\u3002<\/li>\n<\/ul>\n
      3. \u4f7f\u7528 ArrayList<\/strong><\/p>\n
      \u5bf9\u4e8e\u9700\u8981\u9891\u7e41\u4fee\u6539\u7684\u6570\u7ec4\uff0c\u4f7f\u7528 ArrayList \u53ef\u80fd\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002ArrayList \u63d0\u4f9b\u4e86 remove() \u65b9\u6cd5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5220\u9664\u7279\u5b9a\u5143\u7d20\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n
      ArrayList<Integer> list = new ArrayList<>(Arrays.asList(originalArray));\nlist.remove(index);<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4f18\u70b9\uff1a<\/strong><\/p>\n
        \n
      • \u4f7f\u7528\u65b9\u4fbf\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u521b\u5efa\u65b0\u6570\u7ec4\u3002<\/li>\n
      • \u907f\u514d\u4e86\u6f5c\u5728\u7684 IndexOutOfBoundsException\u3002<\/li>\n
      • \u53ef\u4ee5\u8f7b\u677e\u5220\u9664\u591a\u4e2a\u5143\u7d20\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\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":"
        java \u4e2d\u4ece\u6570\u7ec4\u5220\u9664\u5143\u7d20\u7684\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.copyof() \u65b9\u6cd5\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u590d\u5236\u539f\u59cb\u6570\u7ec4\u4e2d\u9664\u76ee\u6807\u5143\u7d20\u5916\u7684\u6240\u6709\u5143\u7d20\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff1a\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u8df3\u8fc7\u76ee\u6807\u5143\u7d20\u3002\u4f7f\u7528 arraylist\uff08\u66f4\u9002\u5408\u9891\u7e41\u4fee\u6539\uff09\uff1a\u4f7f\u7528 remove() \u65b9\u6cd5\u4ece arraylist \u4e2d\u5220\u9664\u76ee\u6807\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u4ece\u6570\u7ec4\u4e2d\u5220\u9664\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u5143\u7d20\u7684\u6709\u5e8f\u96c6\u5408\u3002\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u662f\u5e38\u89c1\u64cd\u4f5c\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5b9e\u73b0\uff1a 1. \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5 \u6b64\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u4e2d\u9664\u8981\u5220\u9664\u5143\u7d20\u4e4b\u5916\u7684\u6240\u6709\u5143\u7d20\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] newArray = Arrays.copyOf(originalArray, originalArray.length – 1); \u767b\u5f55\u540e\u590d\u5236 \u6b65\u9aa4\uff1a \u786e\u5b9a\u8981\u5220\u9664\u7684\u5143\u7d20\u7d22\u5f15 index\u3002 \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 newArray\uff0c\u957f\u5ea6\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf 1\u3002 \u904d\u5386\u539f\u59cb\u6570\u7ec4\uff0c\u5c06\u6240\u6709\u5143\u7d20\u590d\u5236\u5230 newArray\uff0c\u4f46\u8df3\u8fc7\u7d22\u5f15 index \u5904\u7684\u5143\u7d20\u3002 2. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u6b64\u65b9\u6cd5\u5c06\u539f\u59cb\u6570\u7ec4\u4e2d\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a System.arraycopy(originalArray, 0, newArray, 0, originalArray.length – 1); \u767b\u5f55\u540e\u590d\u5236 \u6b65\u9aa4\uff1a […]<\/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-38548","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38548","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=38548"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/38548\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=38548"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=38548"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=38548"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}