Find First Non-Repeating Character in a String
📝 Problem Statement Given a string A, find and return the index of the first non-repeating character.If there is no such character, return -1. 📚 Constraints 1 ≤ |A| ≤ 10⁵ A contains only lowercase English letters. 🎯 Objective You are given a s...
Jun 18, 20253 min read5
