题解 | #第一个只出现一次的字符#
第一个只出现一次的字符
https://www.nowcoder.com/practice/1c82e8cf713b4bbeb2a5b31cf5b0417c?tpId=13&tqId=23258&ru=/exam/oj/ta&qru=/ta/coding-interviews/question-ranking&sourceUrl=%2Fexam%2Foj%2Fta%3Fpage%3D1%26tpId%3D13%26type%3D13
#
# 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
#
#
# @param str string字符串
# @return int整型
#
class Solution:
def FirstNotRepeatingChar(self , str: str) -> int:
# write code here
for x in str:
if str.count(x)>1:
continue
elif str.count(x)==1:
return str.index(x)
return -1
