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你可知我从未惧怕奔赴

#1 Created at ... [Delete] [Delete and Lock User] 
if len(L)==0:
    return(None,None)
max = min = L[0]
for i in L:
    if i>max:
        max=i
    elif i<min:
        min=i
return(min,max)

YCH_2018

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

#测试成功

def findMinAndMax(L): if L == []: return(None,None) max = min =L[0] for i in L: if max<i: max=i if min>i: min=i return (min,max)

if findMinAndMax([]) != (None, None): print('测试失败!') elif findMinAndMax([7]) != (7, 7): print('测试失败!') elif findMinAndMax([7, 1]) != (1, 7): print('测试失败!') elif findMinAndMax([7, 1, 3, 9, 5]) != (1, 9): print('测试失败!') else: print('测试成功!')

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