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