{"id":384,"date":"2026-04-14T17:43:49","date_gmt":"2026-04-14T09:43:49","guid":{"rendered":"https:\/\/www.kirasu.cn\/index.php\/2026\/04\/14\/%e7%ae%97%e6%b3%95\/"},"modified":"2026-04-14T17:43:49","modified_gmt":"2026-04-14T09:43:49","slug":"%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.kirasu.cn\/index.php\/2026\/04\/14\/%e7%ae%97%e6%b3%95\/","title":{"rendered":"\u7b97\u6cd5\u2460"},"content":{"rendered":"

\u4e00\u3001\u5feb\u6162\u6307\u9488<\/h2>\n
\n
\"img\"<\/div>
\n<\/figure>\n
\u79fb\u9664\u5143\u7d20\u95ee\u9898  \n    int[] arr = {0, 1, 2, 2, 3, 0, 4, 2};\n        \/\/ 2. \u5b9a\u4e49\u4e00\u4e2a\u53d8\u91cf\u8868\u793a\u8981\u5220\u9664\u7684\u6570\u636e\n    int val = 2;\n\n        \/\/ 3. \u5229\u7528\u5feb\u6162\u6307\u9488\u53bb\u5220\u9664\u6570\u636e\n    int slow = 0;\n    int fast = 0;\n\n    while (fast < arr.length){\n            \/\/ 4. \u5224\u65ad\u5f53\u524d\u5feb\u6307\u9488\u6307\u5411\u7684\u5143\u7d20\u662f\u5426\u4e3a2\n        if(arr[fast] != val){\n            \/\/ \u4e0d\u76f8\u7b49\n            \/\/ \u5982\u679c\u5feb\u6307\u9488\u5f53\u524d\u7684\u4f4d\u7f6e\u4e0d\u662f2,\u90a3\u4e48\u5c31\u628a\u8fd9\u4e2a\u6570\u5b57\u5b58\u5165\u5230\u6162\u6307\u9488\u7684\u4f4d\u7f6e, \u6162\u6307\u9488,\u5feb\u6307\u9488\u5f80\u540e\u79fb\u52a8\u4e00\u4f4d\n            rr[slow] = arr[fast];\n            slow++;\n        }\n        fast++;\n    }<\/code><\/pre>\n
\u4e8c\u3001\u4e8c\u8def\u5f52\u5e76<\/h2>\n
package com.itheima.test;\n\npublic class Test3 {\n    public static void main(String[] args) {\n        \/*\n            \u7ed9\u5b9a\u4e24\u4e2a\u6b63\u5e8f\u6570\u7ec4arr1\u548carr2\uff0c\u8bf7\u5148\u5408\u5e76\u6570\u7ec4\uff0c\u5e76\u627e\u51fa\u5408\u5e76\u4e4b\u540e\u6570\u7ec4\u7684\u4e2d\u4f4d\u6570\u3002\n            \u4e3e\u4f8b\uff1a\n            1 2 3 4 5 6 7 8 9       \u4e2d\u4f4d\u6570\uff1a5\n            1 2 3 4 5 6            \u4e2d\u4f4d\u6570\uff1a \uff08 3 + 4 \uff09 \/ 2\n        *\/\n\n        int[] arr1 = {1,2,3,4,5};\n        int[] arr2 = {2,3,4,5,6};\n        double res = findMedianSortedArrays(arr1, arr2);\n        System.out.println(res);\n    }\n\n    public static double findMedianSortedArrays(int[] nums1, int[] nums2) {\n        int len1 = nums1.length;\n        int len2 = nums2.length;\n        int len = len1 + len2;\n        int[] arr = new int[len];\n        int index1 = 0;\n        int index2 = 0;\n        for (int i = 0; i < len; i++) {\n            if(index1 == len1){\n                arr[i] = nums2[index2];\n                index2++;\n                continue;\n            }\n            if(index2 == len2){\n                arr[i] = nums1[index1];\n                index1++;\n                continue;\n            }\n            if(nums1[index1] < nums2[index2]){\n                arr[i] = nums1[index1];\n                index1++;\n            }else{\n                arr[i] = nums2[index2];\n                index2++;\n            }\n        }\n\n        if(len % 2 == 0){\n            double num1 = arr[len \/ 2 - 1];\n            double num2 = arr[len \/ 2];\n            return (num1 + num2) \/2;\n        }else{\n            \/\/\u5947\u6570\n            \/\/1 2 3 4 5\n            \/\/0 1 2 3 4\n            return arr[(len - 1) \/ 2];\n        }\n    }\n}<\/code><\/pre>\n
\u4e09\u3001\u52a8\u6001\u89c4\u5212dp\u601d\u60f3<\/h2>\n
\u7ed9\u5b9a n \u4e2a\u975e\u8d1f\u6574\u6570\u8868\u793a\u6bcf\u4e2a\u5bbd\u5ea6\u4e3a 1 \u7684\u67f1\u5b50\u7684\u9ad8\u5ea6\u56fe\uff0c\u8ba1\u7b97\u6309\u6b64\u6392\u5217\u7684\u67f1\u5b50\uff0c\u4e0b\u96e8\u4e4b\u540e\u80fd\u63a5\u591a\u5c11\u96e8\u6c34<\/p>\n
\n
\"img\"<\/div>
\n<\/figure>\n
\u65e2\u7136\u96e8\u6c34\u662f\u5426\u7559\u4e0b\u770b\u5de6\u53f3\u7684\u67f1\u5b50\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u628a\u95ee\u9898\u62c6\u6210\u4e24\u90e8\u5206\uff0c<\/p>\n
    \n
  1. \u5047\u8bbe\u53f3\u8fb9\u6709\u4e00\u4e2a\u65e0\u9650\u9ad8\u7684\u67f1\u5b50\uff0c\u6c34\u65e0\u6cd5\u4ece\u53f3\u8fb9\u6d41\u8d70\uff0c\u53ea\u80fd\u4ece\u5de6\u8fb9\u6d41\u8d70\u3002<\/li>\n
  2. \u5047\u8bbe\u5de6\u8fb9\u6709\u4e00\u4e2a\u65e0\u9650\u9ad8\u7684\u67f1\u5b50\uff0c\u6c34\u65e0\u6cd5\u4ece\u5de6\u8fb9\u6d41\u8d70\uff0c\u53ea\u80fd\u4ece\u53f3\u8fb9\u6d41\u8d70\u3002<\/li>\n
  3. \u518d\u8ba1\u7b97\u4e24\u4e2a\u7684\u4ea4\u96c6\u5c31\u80fd\u5f97\u5230\u6700\u7ec8\u7684\u7ed3\u679c\u3002<\/li>\n<\/ol>\n
    \n
    \"img\"<\/div>
    \n<\/figure>\n
    \n
    \"img\"<\/div>
    \n<\/figure>\n
    \n
    \"img\"<\/div>
    \n<\/figure>\n
    package com.itheima.test;\n\npublic class Test5 {\n    public static void main(String[] args) {\n      \/*\n        \u7ed9\u5b9a n \u4e2a\u975e\u8d1f\u6574\u6570\u8868\u793a\u6bcf\u4e2a\u5bbd\u5ea6\u4e3a 1 \u7684\u67f1\u5b50\u7684\u9ad8\u5ea6\u56fe\uff0c\u8ba1\u7b97\u6309\u6b64\u6392\u5217\u7684\u67f1\u5b50\uff0c\u4e0b\u96e8\u4e4b\u540e\u80fd\u63a5\u591a\u5c11\u96e8\u6c34\n        \u8f93\u5165\uff1aheight = [0,1,0,2,1,0,1,3,2,1,2,1]\n        \u8f93\u51fa\uff1a6\n        \u89e3\u91ca\uff1a\u4e0b\u9762\u662f\u7531\u6570\u7ec4 [0,1,0,2,1,0,1,3,2,1,2,1] \u8868\u793a\u7684\u9ad8\u5ea6\u56fe\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u63a5 6 \u4e2a\u5355\u4f4d\u7684\u96e8\u6c34\uff08\u84dd\u8272\u90e8\u5206\u8868\u793a\u96e8\u6c34\uff09\n      *\/\n\n        \/\/ 1. \u5b9a\u4e49\u6570\u7ec4\n        int[] arr = {0, 1, 0, 2, 1, 0, 1, 3, 2, 1, 2, 1};\n\n        \/\/ 2. \u4ece\u5de6\u5f80\u53f3\u904d\u5386,\u8bb0\u5f55\u96e8\u6c34 + \u67f1\u5b50\u7684\u9762\u79ef\u603b\u548c\n        \/\/ 2.1 \u5b9a\u4e49\u6570\u7ec4\u8bb0\u5f55\u4ece\u5de6\u5f80\u53f3\u770b\u7684\u6570\u636e\n        int[] leftMax = new int[arr.length];\n\n        \/\/ 2.2 \u5b9a\u4e49\u7b2c\u4e09\u65b9\u53d8\u91cftemp\uff0c\u8bb0\u5f55\u5f53\u524d\u6700\u9ad8\u7684\u67f1\u5b50\n        int temp = arr[0];\n\n        \/\/ 2.3 \u904d\u5386\u6570\u7ec4\n        for (int i = 0; i < arr.length; i++) {\n            \/\/ \u5224\u65ad temp  \u6570\u7ec4\u91cc\u9762\u7684\u6570\u636e\n            if(temp > arr[i]){\n                leftMax[i] = temp;\n            }else{\n                leftMax[i] = arr[i];\n                temp = arr[i];\n            }\n        }\n\n        \/\/ 3. \u4ece\u53f3\u5f80\u5de6\u904d\u5386,\u8bb0\u5f55\u96e8\u6c34 + \u67f1\u5b50\u7684\u9762\u79ef\u603b\u548c\n        int[] rightMax = new int[arr.length];\n        temp = arr[arr.length - 1];\n\n        for (int i = arr.length - 1; i >= 0; i--) {\n            if(temp > arr[i]){\n                rightMax[i] = temp;\n            }else{\n                rightMax[i] = arr[i];\n                temp = arr[i];\n            }\n        }\n\n        \/\/ 4. \u53d6\u4ea4\u96c6\n        int[] result = new int[arr.length];\n\n        for (int i = 0; i < rightMax.length; i++) {\n            \/\/ leftMax[i]: \u4ece\u5de6\u5230\u53f3\u6570\u7ec4\u4e2d\u7684\u6570\u636e\n            \/\/ rightMax[i]: \u4ece\u53f3\u5230\u5de6\u6570\u7ec4\u4e2d\u7684\u6570\u636e\n            if(leftMax[i] < rightMax[i]){\n                result[i] = leftMax[i];\n            }else{\n                result[i] = rightMax[i];\n            }\n        }\n\n       \/\/ 5. \u6c42\u548c\n        int sum = 0;\n        for (int i = 0; i < result.length; i++) {\n            sum = sum + result[i];\n        }\n\n        \/\/ 6. \u53bb\u6389\u67f1\u5b50\u7684\u9762\u79ef\n        for (int i = 0; i < arr.length; i++) {\n            sum = sum - arr[i];\n        }\n\n        System.out.println(sum);\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
    \u4e00\u3001\u5feb\u6162\u6307\u9488 \u79fb\u9664\u5143\u7d20\u95ee\u9898 int[] arr = {0, 1, 2, 2, 3, 0, 4, 2}; \/\/  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[19,18],"class_list":["post-384","post","type-post","status-publish","format-standard","hentry","category-jsj","tag-19","tag-18"],"_links":{"self":[{"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/posts\/384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/comments?post=384"}],"version-history":[{"count":1,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/posts\/384\/revisions"}],"predecessor-version":[{"id":385,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/posts\/384\/revisions\/385"}],"wp:attachment":[{"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/media?parent=384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/categories?post=384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kirasu.cn\/index.php\/wp-json\/wp\/v2\/tags?post=384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}