题解 | #密码截取#
密码截取
https://www.nowcoder.com/practice/3cd4621963e8454594f00199f4536bb1
def longest(left,right,myster): while left>=0 and right<len(myster) and myster[left]==myster[right]: left-=1 right+=1 return myster[left+1:right] mystr=input() res="" for i in range(len(mystr)): cnt1=longest(i,i,mystr) cnt2=longest(i,i+1,mystr) cur=cnt1 if len(cnt1)>len(cnt2) else cnt2 if len(cur)>len(res): res=cur print(len(res))