def findMinAndMax(L):
if L is None or len(L)==0:
return None,None
min=L[0]
max=L[0]
for k in L:
if min>k:
min=k
if max<k:
max=k
return min,max
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岁益寒
def findMinAndMax(L):
if L is None or len(L)==0:
return None,None
min=L[0]
max=L[0]
for k in L:
if min>k:
min=k
if max<k:
max=k
return min,max