Question: 1. An inversion in an array AL1 .. n] is a pair of indices i,j such that i A[j] The number of inversions in an

1. An inversion in an array AL1 .. n] is a

1. An inversion in an array AL1 .. n] is a pair of indices i,j such that i A[j] The number of inversions in an n-element array is between 0 (if the array is sorted) and (3) (if the array is sorted backward). Describe and analyze an algorithm to count the number of inversions in an n-element array in O(nlogn) time. Hint: Modify mergesort

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