First Non-Repeating Character in a String

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Use PracHub's coding console to write, test, and debug your solutions in Python or JavaScript. View hints, test against sample inputs, and compare with official solutions.

Q: What difficulty level is this coding question?

This is a medium difficulty Coding & Algorithms question, commonly asked during Onsite rounds at J.P. Morgan.

Q: What role is this question designed for?

This question is commonly asked for Software Engineer candidates at J.P. Morgan during technical interviews.

Question

First Non-Repeating Character in a String

PracHub · Accepted Answer

This question evaluates a candidate's ability to work with hash maps and character frequency counting in string processing. It tests practical coding proficiency, including efficient linear scanning and index tracking, and is commonly used to assess fundamental data structure skills in coding interviews.

Quick Overview

First Non-Repeating Character in a String