2019年11月14日
387. 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: s = "leetcode" return 0. 阅读全文
posted @ 2019-11-14 14:12 Schwifty 阅读(115) 评论(0) 推荐(0)