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Published: Jul 18, 2021 License: MIT Imports: 0 Imported by: 0

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387. First Unique Character in a String

[简单] 哈希表 字符串


给定一个字符串,找到它的第一个不重复的字符,并返回它的索引。如果不存在,则返回 -1。

 

示例:

s = "leetcode"
返回 0

s = "loveleetcode"
返回 2


 

提示:你可以假定该字符串只包含小写字母。

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