Count Candies from Unlockable Boxes

Company: Airbnb

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Overview: This question evaluates a candidate's understanding of graph traversal, state management, and object-oriented design to determine reachability and resource collection in a dependency graph of boxes and keys.

Read the full Airbnb Software Engineer interview experience this question came from