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Challenge: Inversion Count in an Array

Explore the concept of inversion count to evaluate how unsorted an array is. Learn to design an efficient divide and conquer algorithm to count inversions, enhancing your problem-solving skills for coding interviews. This lesson guides you through understanding and implementing the solution in Java.

What is inversion count?

Inversion count represents how far or close an array is from being sorted. If an array is sorted, the inversion count is 0. But if it’s sorted in the reverse order, the inversion count is maximum. ...