def findMinAndMax(L):
while L==[]:
return (None, None)
min=L[0]
max=L[0]
for x in L:
if x<min:
min=x
if x>max:
max=x
return (min,max)
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用户6534737704
def findMinAndMax(L):
while L==[]:
return (None, None)
min=L[0]
max=L[0]
for x in L:
if x<min:
min=x
if x>max:
max=x
return (min,max)