归并排序
# 单行输入多个变量的话，用input().split()读入并分解成列表# 多个整数在一行，则用list(map(int,input().split()))来获取
# merge sort：归并排序
def merge_sort(lst):
if len(lst) <= 1:
return lst
middle = int(len(lst) / 2)
left = merge_sort(lst[:middle])
right = merge_sort(lst)
merged = []
while left and right:
merged.append(left.pop(0) if left <= right else right.pop(0))
merged.extend(right if right else left)
return merged
data_lst =
print(merge_sort(data_lst))
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