You are given a 0-indexed integer array nums of size n and a positive integer k.
We call an index i in the range k <= i < n - k good if the following conditions are satisfied:
k elements that are just before the index i are in non-increasing order.k elements that are just after the index i are in non-decreasing order.Return an array of all good indices sorted in increasing order.
\n\n\n
Example 1:
\n\n\nInput: nums = [2,1,1,1,3,4,1], k = 2\nOutput: [2,3]\nExplanation: There are two good indices in the array:\n- Index 2. The subarray [2,1] is in non-increasing order, and the subarray [1,3] is in non-decreasing order.\n- Index 3. The subarray [1,1] is in non-increasing order, and the subarray [3,4] is in non-decreasing order.\nNote that the index 4 is not good because [4,1] is not non-decreasing.\n\n
Example 2:
\n\n\nInput: nums = [2,1,1,2], k = 2\nOutput: []\nExplanation: There are no good indices in this array.\n\n\n
\n
Constraints:
\n\nn == nums.length3 <= n <= 1051 <= nums[i] <= 1061 <= k <= n / 2给你一个大小为 n 下标从 0 开始的整数数组 nums 和一个正整数 k 。
对于 k <= i < n - k 之间的一个下标 i ，如果它满足以下条件，我们就称它为一个 好 下标：
i 之前 的 k 个元素是 非递增的 。i 之后 的 k 个元素是 非递减的 。按 升序 返回所有好下标。
\n\n\n\n
示例 1：
\n\n\n输入：nums = [2,1,1,1,3,4,1], k = 2\n输出：[2,3]\n解释：数组中有两个好下标：\n- 下标 2 。子数组 [2,1] 是非递增的，子数组 [1,3] 是非递减的。\n- 下标 3 。子数组 [1,1] 是非递增的，子数组 [3,4] 是非递减的。\n注意，下标 4 不是好下标，因为 [4,1] 不是非递减的。\n\n
示例 2：
\n\n\n输入：nums = [2,1,1,2], k = 2\n输出：[]\n解释：数组中没有好下标。\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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