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The Staircase Problem

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
mid, senior

Interview Prompt

Write a function that counts the number of distinct ways to climb to the top of a staircase with n steps. You can take either 1 or 2 steps at a time. For n=3 there are 3 ways: (1+1+1), (1+2), (2+1).

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