Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements.
Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same degree as nums.
\n
Example 1:
\n\n\nInput: nums = [1,2,2,3,1]\nOutput: 2\nExplanation: \nThe input array has a degree of 2 because both elements 1 and 2 appear twice.\nOf the subarrays that have the same degree:\n[1, 2, 2, 3, 1], [1, 2, 2, 3], [2, 2, 3, 1], [1, 2, 2], [2, 2, 3], [2, 2]\nThe shortest length is 2. So return 2.\n\n\n
Example 2:
\n\n\nInput: nums = [1,2,2,3,1,4,2]\nOutput: 6\nExplanation: \nThe degree is 3 because the element 2 is repeated 3 times.\nSo [2,2,3,1,4,2] is the shortest subarray, therefore returning 6.\n\n\n
\n
Constraints:
\n\nnums.length will be between 1 and 50,000.nums[i] will be an integer between 0 and 49,999.给定一个非空且只包含非负数的整数数组 nums，数组的 度 的定义是指数组里任一元素出现频数的最大值。
你的任务是在 nums 中找到与 nums 拥有相同大小的度的最短连续子数组，返回其长度。
\n\n
示例 1：
\n\n\n输入：nums = [1,2,2,3,1]\n输出：2\n解释：\n输入数组的度是 2 ，因为元素 1 和 2 的出现频数最大，均为 2 。\n连续子数组里面拥有相同度的有如下所示：\n[1, 2, 2, 3, 1], [1, 2, 2, 3], [2, 2, 3, 1], [1, 2, 2], [2, 2, 3], [2, 2]\n最短连续子数组 [2, 2] 的长度为 2 ，所以返回 2 。\n\n\n
示例 2：
\n\n\n输入：nums = [1,2,2,3,1,4,2]\n输出：6\n解释：\n数组的度是 3 ，因为元素 2 重复出现 3 次。\n所以 [2,2,3,1,4,2] 是最短子数组，因此返回 6 。\n\n\n
\n\n
提示：
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collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u6ce8\\u610f Python 2.7 \\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\" \\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n 1. 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