deffindMinAndMax(L):
iflen(L)==0:
a=b=None
else:
a=b=L[0]
for x in L:
if x>a:
a=x
elif x<b:
b=x
return b,a
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水滴竹沙
deffindMinAndMax(L):
iflen(L)==0:
a=b=None
else:
a=b=L[0]
for x in L:
if x>a:
a=x
elif x<b:
b=x
return b,a