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First Unique Character in a String

Explore how to identify the first unique character in a string by applying frequency analysis. This lesson guides you through understanding and implementing a solution to return the index of the first non-repeating character or -1 if none exist, while focusing on tracking character occurrences efficiently in C++.

Statement

For a given string of characters, s, your task is to find the first non-repeating character and return its index. Return 1-1 ...