Differing pairs

Given an array of unique randomly sorted integers and a number \(k\) it is required to find the count of the unordered pairs in the array that have a difference of \(k\). In the text file, how many unorederd pairs of numbers have a difference of 70.

Details and Assumptions

As an example in the array [2, 8, 4, 3, 1] with \(k=2\) is \(2\)....(2,4) and (3,1).

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