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The One-Way Street

A easy Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
Python
Difficulty
easy
Seniority
junior, mid

Interview Prompt

Before loading a time-series feed into the warehouse, the data quality layer needs to verify the values only move in one direction. Feeds that bounce up and down get rejected. Given the raw feed values, determine whether the sequence is monotonic.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your python solution with real code execution
  4. Get instant feedback and a hire/no-hire decision