标签:描述 返回 append solution 字符流 ret count return nbsp
如果当前字符流没有存在出现一次的字符,返回#字符。
1 class Solution: 2 # 返回对应char 3 def __init__(self): 4 self.stack=[] 5 def FirstAppearingOnce(self): 6 # write code here 7 for e in self.stack: 8 if self.stack.count(e)==1: 9 return e 10 return "#" 11 def Insert(self, char): 12 # write code here 13 self.stack.append(char)
2020-01-01 15:58:47
标签:描述 返回 append solution 字符流 ret count return nbsp
原文地址:https://www.cnblogs.com/NPC-assange/p/12129094.html