def findMinAndMax(L):
if L==[]:
return None,None
else:
Min=L[0]
Max=L[0]
for d in L:
if d >= Max:
Max=d
if d <= Min:
Min=d
return Min,Max
print(findMinAndMax([]))
print(findMinAndMax([7]))
print(findMinAndMax([7,1]))
print(findMinAndMax([7,1,3,9,5]))
何苦来哉ooo
def findMinAndMax(L): if L==[]: return None,None else: Min=L[0] Max=L[0] for d in L: if d >= Max: Max=d if d <= Min: Min=d return Min,Max print(findMinAndMax([])) print(findMinAndMax([7])) print(findMinAndMax([7,1])) print(findMinAndMax([7,1,3,9,5]))