50 第一次出现一次的字符
2018-06-26 本文已影响0人
土味老猪
class Solution(object):
def firststr(self,String):
dic = {}
for i in String:
dic[i] = dic.get(i,0)+1
for j in dic:
if dic[j] == 1:
return j
s = Solution()
String = 'abaccdeff'
print(s.firststr(String))
