def trim(s):
if(s==''):
return s
if(s[0]!='' and s[-1]!=''):
elif s[0]=='':
trim(s[1:])
elif s[-1]=='':
trim(s[:-1])
print(s)
想问问这个为什么不对啊
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褴褛衣
def trim(s):
if(s==''):
return s
if(s[0]!='' and s[-1]!=''):
return s
elif s[0]=='':
trim(s[1:])
elif s[-1]=='':
trim(s[:-1])
print(s)
想问问这个为什么不对啊