Count Length-3 Chat Substrings with a Vowel
Company: Hudson River Trading
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Technical Screen
Overview: This Hudson River Trading coding question checks careful string scanning over fixed-length substrings with a small character predicate. It is a compact console-ready exercise for practicing boundary handling, linear traversal, and turning a short interview prompt into reliable code.