Merge Counters
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
- L3
Interview Prompt
Given two dicts d1 and d2 mapping keys to numbers, return a new dict combining all keys. For keys present in both, sum the two values. For keys in only one, keep that value.
Summary
Two tallies. Combine them.
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