DSA Section簡単

Heap Sort

Detailed guide and Python implementation for the 'Heap Sort' problem.

問題提起

簡単

Write a function heap_sort(arr) that sorts a list of integers arr in ascending order using the Heap Sort algorithm (building a max heap first) and returns the sorted list.

制約
  • 0 <= len(arr) <= 10^4
  • -10^5 <= arr[i] <= 10^5

Example 1
Input
arr = [12, 11, 13, 5, 6, 7]
Output
[5, 6, 7, 11, 12, 13]
Explanation

A max heap is created, the maximum element is repeatedly swapped with the last element of the heap, and heapify is performed.

Need a Hint?
Consider using Sorting-specific data structures like sets or heaps.
Edge Cases to Watch
  • Empty input structures
  • Single element inputs
  • Large numerical bounds

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