Count Pairs With XOR in Range
Given an array of integers and a range `[low, high]`, count the number of pairs `(i, j)` with `i < j` such that the XOR of the pair falls within the inclusive range.
Given an array of integers and a range `[low, high]`, count the number of pairs `(i, j)` with `i < j` such that the XOR of the pair falls within the inclusive range.