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写代码最好加注释

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biggerdream

#1 Created at ... [Delete] [Delete and Lock User]

def findMinAndMax(L):

#如果列表不为空:
if L != [] :
    #定义最小值和最大值,并初始化
    min = L[0]
    max = L[0]
    #遍历列表
    for i in L :
        #获取最小值
        if i < min :
            min = i
        #获取最大值
        if i > max :
            max = i
    #返回最小值和最大值
    return (min, max)
#如果列表为空:直接返回none
return (None, None)

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