if L == []:
return (None, None)
elif len(L) == 1:
return (L[0], L[0])
else:
L.sort()
return (L[0], L[-1])
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爱上树的椰子蟹
if L == []:
return (None, None)
elif len(L) == 1:
return (L[0], L[0])
else:
L.sort()
return (L[0], L[-1])