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Solution: Reverse Pairs

Explore how to count reverse pairs in an integer array by applying the sort and search pattern with a modified merge sort. Understand the divide-and-conquer method to efficiently identify and count pairs where one element is more than twice another. This lesson guides you through recursive sorting, searching with two pointers, and merging steps to solve the problem in O(n log n) time, enhancing your problem-solving skills for coding interviews.

Statement

You are given an integer array, nums. Your task is to count how many reverse pairs exist in the array and return the total number of such pairs. ...