def findMinAndMax(L): if L==[]: return(None,None) else: min=max=L[0] for i in L: if min>i: min=i if max<i: max=i return(min,max)
if findMinAndMax([]) != (None, None): print('测试失败!') elif findMinAndMax([7]) != (7, 7): print('测试失败!') elif findMinAndMax([7, 1]) != (1, 7): print('测试失败!') elif findMinAndMax([7, 1, 3, 9, 5]) != (1, 9): print('测试失败!') else: print('测试成功!')
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都市里的北极星
* coding: utf-8 *
def findMinAndMax(L): if L==[]: return(None,None) else: min=max=L[0] for i in L: if min>i: min=i if max<i: max=i return(min,max)
测试
if findMinAndMax([]) != (None, None): print('测试失败!') elif findMinAndMax([7]) != (7, 7): print('测试失败!') elif findMinAndMax([7, 1]) != (1, 7): print('测试失败!') elif findMinAndMax([7, 1, 3, 9, 5]) != (1, 9): print('测试失败!') else: print('测试成功!')