number of pairs
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[LeetCode] Number of Good Pairs
https://leetcode.com/problems/number-of-good-pairs Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i
https://leetcode.com/problems/number-of-good-pairs Given an array of integers nums, return the number of good pairs. A pair (i, j) is called good if nums[i] == nums[j] and i