First Unique Character in a String Problem

First Unique Character in a String Problem — ExecCode Easy DSA Practice

Solve the First Unique Character in a String problem on ExecCode. Free online easy DSA practice in Arrays - Basics. Write and run code in Java, C++, Python — no signup required to run.

Problem description

Find the first non-repeating character in s and return its index, or -1. For First Unique Character in a String, focus on the exact input variables, return only the requested value, and preserve the required time complexity for the intended pattern.

Examples

Input s = "leetcode"; Output 0

Constraints

1 ≤ n ≤ 10^5 Values fit interview constraints

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