LeetCode 387. First Unique Character in a String

Опубликовано: 06 Январь 2025
на канале: Prograamer

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

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