Python 归并排序
参考方法：
#定义归并排序函数
def merge_sort(lst):
if len(lst)<=1:
return lst
middle =int(len(lst)/2)
left = merge_sort(lst[:middle])#左边
right = merge_sort(lst[middle:])#右边
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) #该方法没有返回值，但会在已存在的列表中添加新的列表内容
return merged
data_lst =[6,202,100,301,38,8,1]
print(merge_sort(data_lst))
