快速排序
def quick_sort(sort_list, start_index, end_index):
if start_index < end_index: # 如果角标左侧小于右侧则开始排序,否则退出
basic, i, j = sort_list[start_index], start_index, end_index
while i < j:
while i < j and basic <= sort_list[j]: # 基准值比j(右侧)小,那么该值不做任何事情
j -= 1
while i < j and basic >= sort_list[i]:
i += 1
sort_list[i], sort_list[j] = sort_list[j], sort_list[i]
sort_list[i], sort_list[start_index] = sort_list[start_index], sort_list[i]
quick_sort(sort_list, start_index, i – 1)
quick_sort(sort_list, i + 1, end_index)
l = [10, 6, 9, 18, 20, 5, 7, 15, 14, 18,19]
quick_sort(l,0,len(l)-1)
print(l)