0387-first-unique-character-in-a-string.adoc

387. First Unique Character in a String

LeetCode - First Unique Character in a String

还是要善用 Map 来统计字符数量！

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.

s = "loveleetcode",
return 2.

Note: You may assume the string contain only lowercase letters.

link:{sourcedir}/_0387_FirstUniqueCharacterInAString.java[role=include]