2016年8月30日
First Unique Character in a String
摘要： Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: Note: You may assume the 阅读全文
posted @ 2016-08-30 02:25 Hygeia 阅读(364) 评论(0) 推荐(0) 编辑