First Unique Character in a String at Qualcomm

Easy65.0% acceptance

This problem has 50.0% frequency at Qualcomm.

Problem Description

Given a string `s`, find the **first** non-repeating character in it and return its index. If it **does not** exist, return `-1`.

Read full problem and hints

Topics

Hash Table String Queue Counting

Also asked at 24 companies

Accenture Adobe Akamai Amazon Apple Bloomberg Deloitte Epam Systems Fidelity Goldman Sachs Google IBM JPMorgan Meta Microsoft Morgan Stanley NVIDIA Oracle Razorpay TCS+4 more

View Full Problem

More Qualcomm Questions

String Compression IIIMedium Valid ParenthesesEasy Two SumEasy Longest Substring Without Repeating CharactersMedium LRU CacheMedium

View all Qualcomm questions