How to Solve K-diff Pairs in an Array Problem
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K-diff Pairs in an Array
Given an array of integers nums and an integer k, return the number of unique k-diff pairs in the array. A k-diff pair is an integer pair (nums[i], nums[j]), where the following are true: 0 <= i, j < ...
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Understanding the K-diff Pairs in an Array Problem
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Problem Statement
Given an array of integers nums and an integer k, return the number of unique k-diff pairs in the array. A k-diff pair is an integer pair (nums[i], nums[j]), where the following are true: 0 <= i, j < nums.length i != j |nums[i] - nums[j]| == k Notice that |val| denotes the absolute value of val.
K-diff Pairs in an Array
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Examples
nums = [3,1,4,1,5], k = 22There are two 2-diff pairs in the array, (1, 3) and (3, 5). Although we have two 1s in the input, we should only return the number of unique pairs.
nums = [1,2,3,4,5], k = 14There are four 1-diff pairs in the array, (1, 2), (2, 3), (3, 4) and (4, 5).
nums = [1,3,1,5,4], k = 01There is one 0-diff pair in the array, (1, 1).
Constraints
1 <= nums.length <= 104107 <= nums[i] <= 1070 <= k <= 107How Interview Coder Helps with Leetcode Problems
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