if L ==[]:
return (None, None)
min = L[0]
max = L[0]
for n in L[:]:
if n > max:
max = n
if n < min:
min = n
return (min, max)
写的时候犯了一个小错误,最后返回的时候缩进问题,导致一直测试失败,后来参照其他同学的改进后测试成功
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在下胡汉三
if L ==[]:
return (None, None)
min = L[0]
max = L[0]
for n in L[:]:
if n > max:
max = n
if n < min:
min = n
return (min, max)