Sorting: Quick Sort https://youtu.be/QaFmEzMtYu8 https://youtu.be/OYnYbSC-Y_w # Implementation of QuickSortdef quickSort(arr: list[int], s: int, e: int) -> list[int]: if e - s + 1 # Definition for a pair.# class Pair:# def __init__(self, key: int, value: str):# self.key = key# self.value = valueclass Solution: def quickSort(self, pairs: List[Pair]) -> List[Pair]: ..