quick_sort
quick_sort.py 源码
from typing import List
# 快速排序
def quick_sort(data: List[int]):
quick_sort_helper(data, 0, len(data) - 1)
def quick_sort_helper(data, lo, hi):
if lo >= hi:
return
mid = partition(data, lo, hi)
quick_sort_helper(data, lo, mid - 1)
quick_sort_helper(data, mid + 1, hi)
def partition(data, lo, hi) -> int:
pivot = data[hi]
i, j = lo, lo
while j < hi:
if data[j] < pivot:
data[i], data[j] = data[j], data[i]
i += 1
j += 1
data[i], data[hi] = data[hi], data[i]
return i
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