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