def findMinAndMax(L):
if L == []:
return (None,None)
minval = L[0]
maxval = L[0]
for x in L:
if x > maxval:
maxval = x
elif x < minval:
minval = x
return (minval,maxval)
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def findMinAndMax(L):
if L == []:
return (None,None)
minval = L[0]
maxval = L[0]
for x in L:
if x > maxval:
maxval = x
elif x < minval:
minval = x
return (minval,maxval)