2006. Count Number of Pairs With Absolute Difference K
Given an integer array nums and an integer k, return the number of pairs (i, j) where i = 0. -x if x < 0. Example 1: Input: nums = [1,2,2,1], k = 1 Output: 4 Explanation: The pairs with an absolute difference of 1 are: - [1,2,2,1] - [1,2,2,1] - [1,2,2,1] - [1,2,2,1] Example 2: Input: nums = [1,3], k = 3 Output: 0 Exp..