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Sort an Array

Understand how to implement efficient sorting algorithms to arrange an integer array in ascending order without relying on built-in methods. This lesson helps you apply greedy techniques to solve the problem within O(n log n) time and minimal space, preparing you for coding interviews.

Statement

Given an integer array, nums, sort it in ascending order and return the sorted array.

You must implement the sorting algorithm yourself; do not use any built-in sorting functions. The solution must run in O(nlogn)O(n \log n) ...