python-归并排序

程序：
def merge_sort(lst):
    if len(lst) <= 1:
        return lst
    middle = int(len(lst)/2)
    left = merge_sort(lst[:middle])
    right = merge_sort(lst[middle:])
    merged = []
    while left and right:
        merged.append(left.pop(0) if left[0] <= right[0] else right.pop(0))
    merged.extend(right if right else  left)
    return merged
data_lst = [6,202,100,301,38,8,1]
print(merge_sort(data_lst))

结果：

[1, 6, 8, 38, 100, 202, 301]