def findMinAndMax(L):
if not L:
return None, None
max_temp = L[0]
min_temp = L[0]
for va in L:
if va > max_temp:
max_temp = va
if va < min_temp:
min_temp = va
return min_temp, max_temp
# 测试
print(findMinAndMax([-1, 2, 3, 4, 5, 6, 7, 10, 0]))
print(findMinAndMax([]))
烈可烈
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