How do I practice coding and algorithm questions?

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.

What difficulty level is this coding question?

This is a hard difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Amazon.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at Amazon during technical interviews.

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Quick Overview

This question evaluates graph algorithm skills—specifically topological ordering, directed cycle detection, and analysis of time and space complexity. Common in Coding & Algorithms interviews, it examines reasoning about dependency resolution in directed graphs and requires practical algorithm implementation with emphasis on algorithmic complexity, placing it at the practical application and algorithmic-analysis level rather than purely conceptual understanding.

hard
Amazon
Coding & Algorithms
Software Engineer