Follow-up · depth 8
Compare DFS Cycle Detection (Directed Graph) with a common alternative in a design review
Compare DFS Cycle Detection (Directed Graph) with a common alternative in a design review
Answers use simple, clear English.
Quick interview answer
Compare DFS Cycle Detection (Directed Graph) vs the usual alternative on complexity, latency, failure modes, and ops cost. Pros: O(V+E); distinguishes directed vs undirected cycle logic. Cons: Recursive DFS risks stack overflow on huge graphs; use iterative + explicit stack.
Detailed answer
Design-review comparison for DFS Cycle Detection (Directed Graph): Axes: correctness, latency, throughput, complexity, operability. From the topic: Pros: O(V+E); distinguishes directed vs undirected cycle logic. Cons: Recursive DFS risks stack overflow on huge graphs; use iterative + explicit stack. Recommendation: pick DFS Cycle Detection (Directed Graph) when its strengths match the SLO; otherwise choose the alternative and say why. Parent context: Mitigate first, then root-cause. Check symptoms against: Using two-color visited only (misses cross edges in undirected); forgetting disconnected components..
Full explanation
Show a clear decision framework, not “it depends” with no criteria. Pros: O(V+E); distinguishes directed vs undirected cycle logic. Cons: Recursive DFS risks stack overflow on huge graphs; use iterative + explicit stack.
Follow-up questions
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Parent context — DFS Cycle Detection (Directed Graph)
Mitigate first, then root-cause. Check symptoms against: Using two-color visited only (misses cross edges in undirected); forgetting disconnected components..
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