The Cipher Wheel
An easy Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
Your team's data masking tool swaps characters according to a per-tenant config. Given a plaintext string `text` and a `mapping` from characters to their replacements, return the masked string.
Summary
Every letter has an alias - you just need the right codebook.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision