{"id":66490,"date":"2025-05-03T12:47:55","date_gmt":"2025-05-03T04:47:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66490\/"},"modified":"2025-05-03T12:47:55","modified_gmt":"2025-05-03T04:47:55","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%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66490\/","title":{"rendered":"java\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u6570"},"content":{"rendered":"

\n \u5982\u4f55\u5728 java \u4e2d\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e2a\u6570\u5b57\uff1f\u4f7f\u7528 arrays.sort() \u548c system.arraycopy() \u53ef\u6309\u4ee5\u4e0b\u6b65\u9aa4\u5220\u9664\u7279\u5b9a\u6570\u5b57\uff1a1. \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u30022. \u627e\u5230\u76ee\u6807\u6570\u5b57\u7684\u7d22\u5f15\u30023. \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf\u53bb 1\u30024. \u4f7f\u7528 system.arraycopy() \u590d\u5236\u6240\u9700\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u4e2d\u30025. \u5c06\u65b0\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u624b\u52a8\u904d\u5386\u6570\u7ec4\u5e76\u5728\u627e\u5230\u76ee\u6807\u6570\u5b57\u65f6\u8fdb\u884c\u5220\u9664\u3002\n<\/p><\/blockquote>\n

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

\u5982\u4f55\u5728 Java \u4e2d\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e2a\u6570\u5b57<\/strong><\/p>\n

\u76f4\u63a5\u65b9\u6cd5\uff1a\u4f7f\u7528 Arrays.sort() \u548c System.arraycopy()<\/strong><\/p>\n

\u8be5\u65b9\u6cd5\u901a\u8fc7\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff0c\u7136\u540e\u4f7f\u7528 System.arraycopy() \u4ece\u6392\u5e8f\u540e\u7684\u6570\u7ec4\u4e2d\u590d\u5236\u6240\u9700\u5143\u7d20\uff0c\u4ece\u800c\u5220\u9664\u7279\u5b9a\u6570\u5b57\u3002<\/p>\n

    \n
  1. \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1aArrays.sort(arr);<\/li>\n
  2. \u627e\u5230\u76ee\u6807\u6570\u5b57\u5728\u6392\u5e8f\u540e\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15\uff1aint index = Arrays.binarySearch(arr, target);<\/li>\n
  3. \u5982\u679c\u76ee\u6807\u6570\u5b57\u5b58\u5728\uff0c\u5219\u4e3a\u6b63\u6570\u7d22\u5f15\uff0c\u5426\u5219\u4e3a\u8d1f\u6570\u7d22\u5f15\u3002<\/li>\n
  4. \u5982\u679c\u76ee\u6807\u6570\u5b57\u5b58\u5728\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf\u53bb 1\uff1aint[] newArr = new int[arr.length – 1];<\/li>\n
  5. \u4f7f\u7528 System.arraycopy() \u590d\u5236\u6240\u9700\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u4e2d\uff1aSystem.arraycopy(arr, 0, newArr, 0, index);<\/li>\n
  6. System.arraycopy(arr, index + 1, newArr, index, arr.length – index – 1);<\/li>\n
  7. \u5c06\u65b0\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\uff1aarr = newArr;<\/li>\n<\/ol>\n

    \u624b\u52a8\u65b9\u6cd5\uff1a\u4f7f\u7528 for \u5faa\u73af<\/strong><\/p>\n

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

    \u8be5\u65b9\u6cd5\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5e76\u5728\u627e\u5230\u76ee\u6807\u6570\u5b57\u65f6\u8fdb\u884c\u5220\u9664\u3002<\/p>\n

      \n
    1. \u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u6570\u7ec4\uff1afor (int i = 0; i <\/li>\n
    2. \u68c0\u67e5\u5f53\u524d\u5143\u7d20\u662f\u5426\u4e0e\u76ee\u6807\u6570\u5b57\u76f8\u7b49\uff1aif (arr[i] == target) {<\/li>\n
    3. \u5982\u679c\u76f8\u7b49\uff0c\u5219\u4f7f\u7528 for \u5faa\u73af\u5c06\u540e\u7eed\u5143\u7d20\u5411\u524d\u79fb\u52a8\u4e00\u4f4d\uff0c\u8986\u76d6\u5f53\u524d\u5143\u7d20\uff1afor (int j = i + 1; j <\/li>\n
    4. arr[j – 1] = arr[j];<\/li>\n
    5. }<\/li>\n
    6. \u9012\u51cf\u6570\u7ec4\u957f\u5ea6\uff1aarr.length–;<\/li>\n
    7. \u9000\u51fa for \u5faa\u73af\uff1abreak;<\/li>\n
    8. }<\/li>\n<\/ol>\n

      \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u6570\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

      \u5982\u4f55\u5728 java \u4e2d\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e2a\u6570\u5b57\uff1f\u4f7f\u7528 arrays.sort() \u548c system.arraycopy() \u53ef\u6309\u4ee5\u4e0b\u6b65\u9aa4\u5220\u9664\u7279\u5b9a\u6570\u5b57\uff1a1. \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u30022. \u627e\u5230\u76ee\u6807\u6570\u5b57\u7684\u7d22\u5f15\u30023. \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf\u53bb 1\u30024. \u4f7f\u7528 system.arraycopy() \u590d\u5236\u6240\u9700\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u4e2d\u30025. \u5c06\u65b0\u6570\u7ec4\u5206\u914d\u7ed9\u539f\u59cb\u6570\u7ec4\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u624b\u52a8\u904d\u5386\u6570\u7ec4\u5e76\u5728\u627e\u5230\u76ee\u6807\u6570\u5b57\u65f6\u8fdb\u884c\u5220\u9664\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5220\u9664\u6570\u7ec4\u4e2d\u67d0\u4e2a\u6570\u5b57 \u76f4\u63a5\u65b9\u6cd5\uff1a\u4f7f\u7528 Arrays.sort() \u548c System.arraycopy() \u8be5\u65b9\u6cd5\u901a\u8fc7\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff0c\u7136\u540e\u4f7f\u7528 System.arraycopy() \u4ece\u6392\u5e8f\u540e\u7684\u6570\u7ec4\u4e2d\u590d\u5236\u6240\u9700\u5143\u7d20\uff0c\u4ece\u800c\u5220\u9664\u7279\u5b9a\u6570\u5b57\u3002 \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\uff1aArrays.sort(arr); \u627e\u5230\u76ee\u6807\u6570\u5b57\u5728\u6392\u5e8f\u540e\u6570\u7ec4\u4e2d\u7684\u7d22\u5f15\uff1aint index = Arrays.binarySearch(arr, target); \u5982\u679c\u76ee\u6807\u6570\u5b57\u5b58\u5728\uff0c\u5219\u4e3a\u6b63\u6570\u7d22\u5f15\uff0c\u5426\u5219\u4e3a\u8d1f\u6570\u7d22\u5f15\u3002 \u5982\u679c\u76ee\u6807\u6570\u5b57\u5b58\u5728\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5927\u5c0f\u4e3a\u539f\u59cb\u6570\u7ec4\u957f\u5ea6\u51cf\u53bb 1\uff1aint[] newArr = new int[arr.length – 1]; \u4f7f\u7528 System.arraycopy() \u590d\u5236\u6240\u9700\u5143\u7d20\u5230\u65b0\u6570\u7ec4\u4e2d\uff1aSystem.arraycopy(arr, 0, newArr, 0, index); System.arraycopy(arr, index + 1, newArr, index, […]<\/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-66490","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66490","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=66490"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66490\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}