Loading interview...
The Cycle Detector
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- junior, mid
Interview Prompt
Given a linked list represented as a list of nodes where each node points to the next by index (or -1 if it is the tail), determine if the list contains a cycle. A cycle exists if following the next pointers eventually revisits a node. Return True if a cycle exists, False otherwise.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision