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The Build Order
A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- medium
- Seniority
- mid, senior
Problem
A CI/CD system needs to determine the correct order to build modules where some modules depend on others. Given a number of modules and a list of dependency pairs, write a function that returns a valid topological ordering. Return an empty list if a cycle is detected.
Practice This Problem
Solve this Python problem with real code execution. DataDriven runs your Python code in a sandboxed Docker environment and grades it instantly.