You are given a 0-indexed integer array nums and two integers key and k. A k-distant index is an index i of nums for which there exists at least one index j such that |i - j| <= k and nums[j] == key.
Return a list of all k-distant indices sorted in increasing order.
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Example 1:
\n\n\nInput: nums = [3,4,9,1,3,9,5], key = 9, k = 1\nOutput: [1,2,3,4,5,6]\nExplanation: Here,\n\nnums[2] == keyandnums[5] == key.\n- For index 0, |0 - 2| > k and |0 - 5| > k, so there is no jwhere|0 - j| <= kandnums[j] == key. Thus, 0 is not a k-distant index.\n- For index 1, |1 - 2| <= k and nums[2] == key, so 1 is a k-distant index.\n- For index 2, |2 - 2| <= k and nums[2] == key, so 2 is a k-distant index.\n- For index 3, |3 - 2| <= k and nums[2] == key, so 3 is a k-distant index.\n- For index 4, |4 - 5| <= k and nums[5] == key, so 4 is a k-distant index.\n- For index 5, |5 - 5| <= k and nums[5] == key, so 5 is a k-distant index.\n- For index 6, |6 - 5| <= k and nums[5] == key, so 6 is a k-distant index.\nThus, we return [1,2,3,4,5,6] which is sorted in increasing order. \n
Example 2:
\n\n\nInput: nums = [2,2,2,2,2], key = 2, k = 2\nOutput: [0,1,2,3,4]\nExplanation: For all indices i in nums, there exists some index j such that |i - j| <= k and nums[j] == key, so every index is a k-distant index. \nHence, we return [0,1,2,3,4].\n\n\n
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Constraints:
\n\n1 <= nums.length <= 10001 <= nums[i] <= 1000key is an integer from the array nums.1 <= k <= nums.lengthCompiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
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