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