{"id":36914,"date":"2024-11-26T10:40:04","date_gmt":"2024-11-26T02:40:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36914\/"},"modified":"2024-11-26T10:40:04","modified_gmt":"2024-11-26T02:40:04","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%88%aa%e5%8f%96%e5%89%8d","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36914\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u622a\u53d6\u524d"},"content":{"rendered":"

\n java \u4e2d\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\u53ef\u622a\u53d6\u6570\u7ec4\u524d\u51e0\u4e2a\u5143\u7d20\u3002\u8be5\u65b9\u6cd5\u63a5\u6536\u6e90\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u548c\u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\uff0c\u8fd4\u56de\u5305\u542b\u622a\u53d6\u90e8\u5206\u7684\u65b0\u6570\u7ec4\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a\u8bbe\u7f6e\u539f\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\u548c\u7ec8\u6b62\u7d22\u5f15\u3002\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u3002\u5c06\u65b0\u6570\u7ec4\u6253\u5370\u51fa\u6765\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u622a\u53d6\u524d\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u622a\u53d6 Java \u6570\u7ec4\u7684\u524d\u51e0\u4e2a\u5143\u7d20<\/strong><\/p>\n

Java \u4e2d\u6570\u7ec4\u524d\u51e0\u4e2a\u5143\u7d20\u7684\u622a\u53d6\u53ef\u4ee5\u901a\u8fc7 Arrays.copyOfRange() \u65b9\u6cd5\u5b9e\u73b0\u3002\u8be5\u65b9\u6cd5\u63a5\u6536\u6e90\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u548c\u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u5305\u542b\u622a\u53d6\u90e8\u5206\u7684\u65b0\u6570\u7ec4\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

public static <T> T[] copyOfRange(T[] original, int from, int to)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u53c2\u6570\uff1a<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  • original – \u6e90\u6570\u7ec4<\/li>\n
  • from – \u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09<\/li>\n
  • to – \u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09<\/li>\n<\/ul>\n
    \u8fd4\u56de\u503c\uff1a<\/strong><\/p>\n
      \n
    • \u4e0e original \u5177\u6709\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u5305\u542b\u4ece from \u5230 to \u7d22\u5f15\u7684\u5143\u7d20<\/li>\n<\/ul>\n
      \u793a\u4f8b\uff1a<\/strong><\/p>\n
      int[] numbers = {1, 2, 3, 4, 5};\n\n\/\/ \u622a\u53d6\u524d 3 \u4e2a\u5143\u7d20\nint[] subarray1 = Arrays.copyOfRange(numbers, 0, 3);\n\n\/\/ \u622a\u53d6\u4ece\u7d22\u5f15 1 \u5230\u7d22\u5f15 4 \u7684\u5143\u7d20\uff08\u4e0d\u5305\u62ec\u7d22\u5f15 4\uff09\nint[] subarray2 = Arrays.copyOfRange(numbers, 1, 4);\n\nSystem.out.println(Arrays.toString(subarray1)); \/\/ [1, 2, 3]\nSystem.out.println(Arrays.toString(subarray2)); \/\/ [2, 3, 4]<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u6ce8\u610f\uff1a<\/strong><\/p>\n
        \n
      • \u7d22\u5f15\u5fc5\u987b\u5728\u6570\u7ec4\u8fb9\u754c\u5185\u3002<\/li>\n
      • \u7ec8\u6b62\u7d22\u5f15\u5fc5\u987b\u5927\u4e8e\u6216\u7b49\u4e8e\u8d77\u59cb\u7d22\u5f15\u3002<\/li>\n
      • \u622a\u53d6\u7684\u5b50\u6570\u7ec4\u4e0e\u6e90\u6570\u7ec4\u4e0d\u5171\u4eab\u5143\u7d20\u3002\u5b83\u662f\u6e90\u6570\u7ec4\u5143\u7d20\u7684\u526f\u672c\u3002<\/li>\n<\/ul>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u622a\u53d6\u524d\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\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\u53ef\u622a\u53d6\u6570\u7ec4\u524d\u51e0\u4e2a\u5143\u7d20\u3002\u8be5\u65b9\u6cd5\u63a5\u6536\u6e90\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u548c\u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\uff0c\u8fd4\u56de\u5305\u542b\u622a\u53d6\u90e8\u5206\u7684\u65b0\u6570\u7ec4\u3002\u6b65\u9aa4\u5982\u4e0b\uff1a\u8bbe\u7f6e\u539f\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\u548c\u7ec8\u6b62\u7d22\u5f15\u3002\u4f7f\u7528 arrays.copyofrange() \u65b9\u6cd5\u521b\u5efa\u65b0\u6570\u7ec4\u3002\u5c06\u65b0\u6570\u7ec4\u6253\u5370\u51fa\u6765\u3002 \u5982\u4f55\u622a\u53d6 Java \u6570\u7ec4\u7684\u524d\u51e0\u4e2a\u5143\u7d20 Java \u4e2d\u6570\u7ec4\u524d\u51e0\u4e2a\u5143\u7d20\u7684\u622a\u53d6\u53ef\u4ee5\u901a\u8fc7 Arrays.copyOfRange() \u65b9\u6cd5\u5b9e\u73b0\u3002\u8be5\u65b9\u6cd5\u63a5\u6536\u6e90\u6570\u7ec4\u3001\u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09\u548c\u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u5305\u542b\u622a\u53d6\u90e8\u5206\u7684\u65b0\u6570\u7ec4\u3002 \u8bed\u6cd5\uff1a public static <T> T[] copyOfRange(T[] original, int from, int to) \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b original – \u6e90\u6570\u7ec4 from – \u8d77\u59cb\u7d22\u5f15\uff08\u5305\u62ec\uff09 to – \u7ec8\u6b62\u7d22\u5f15\uff08\u4e0d\u5305\u62ec\uff09 \u8fd4\u56de\u503c\uff1a \u4e0e original \u5177\u6709\u76f8\u540c\u7c7b\u578b\u7684\u6570\u7ec4\uff0c\u5305\u542b\u4ece from \u5230 to \u7d22\u5f15\u7684\u5143\u7d20 \u793a\u4f8b\uff1a int[] numbers = {1, 2, 3, 4, 5}; \/\/ \u622a\u53d6\u524d […]<\/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-36914","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36914","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=36914"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36914\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}