Class Solution
java.lang.Object
g0301_0400.s0387_first_unique_character_in_a_string.Solution
387 - First Unique Character in a String\.
Easy
Given a string `s`, _find the first non-repeating character in it and return its index_. If it does not exist, return `-1`.
**Example 1:**
**Input:** s = "leetcode"
**Output:** 0
**Example 2:**
**Input:** s = "loveleetcode"
**Output:** 2
**Example 3:**
**Input:** s = "aabb"
**Output:** -1
**Constraints:**
*
1 <= s.length <= 105
* `s` consists of only lowercase English letters.-
Constructor Summary
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Method Summary
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Solution
public Solution()
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Method Details
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firstUniqChar
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