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Solution: Sort an Array

Explore how to implement heap sort to organize an integer array in ascending order, ensuring O(n log n) time complexity with minimal space. This lesson guides you through building a max heap, in-place sorting, and understanding trade-offs like algorithm stability and space usage.

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) time and use the minimum possible extra space.

Constraints:

  • 11 \leq nums.length ...