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Debug and Explain Fixes
Problem Description
You are presented with a small, self-contained codebase that contains several defects, resulting in failing unit tests.
Your Task
Your objective is to:
- Identify the root causes of all failing unit tests.
- Implement fixes for these identified bugs.
- Clearly explain the nature of each defect found and the rationale behind your fixes.
- Add minimal, targeted unit tests to prevent regressions for the specific issues you addressed.
- Articulate your debugging strategy, detailing the steps you took to diagnose the problems.
- Describe any tools or techniques you utilized during the debugging and fixing process.
AI interview prep
Core dilemma
The central engineering conflict is distinguishing between symptomatic fixes and root cause analysis, while demonstrating a systematic, reproducible approach to problem-solving under pressure. It's about *how* you debug, not just *if* you can fix it.
Mid-level signals3
Senior signals3
Red flags4
3 tradeoffs and 3 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Debug and Explain Fixes
Problem Description
You are presented with a small, self-contained codebase that contains several defects, resulting in failing unit tests.
Your Task
Your objective is to:
- Identify the root causes of all failing unit tests.
- Implement fixes for these identified bugs.
- Clearly explain the nature of each defect found and the rationale behind your fixes.
- Add minimal, targeted unit tests to prevent regressions for the specific issues you addressed.
- Articulate your debugging strategy, detailing the steps you took to diagnose the problems.
- Describe any tools or techniques you utilized during the debugging and fixing process.