Class Solution


  • public class Solution
    extends Object
    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 Detail

      • Solution

        public Solution()
    • Method Detail

      • firstUniqChar

        public int firstUniqChar​(String s)