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测试成功

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筱枫_Edward

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if L==[]: return (None, None) else: minandmax = [L[0],L[0]] #不能直接用tuple()，tuple的值不能改 for x in L: if x<minandmax[0]: minandmax[0] = x if x>minandmax[1]: minandmax[1] = x return (minandmax[0],minandmax[1]) #把list改成tuple

print(findMinAndMax([7])) print(findMinAndMax([])) print(findMinAndMax([7, 1])) print(findMinAndMax([7, 1, 3, 9, 5]))

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