Leetcode 2006. Count Number of Pairs With Absolute Difference K

class Solution:
    def countKDifference(self, nums: List[int], k: int) -> int:
        cnt=0
        for i in range(len(nums)):
            for j in range(i+1,len(nums)):
                if abs (nums[i]-nums[j])==k: cnt+=1
        return cnt