The Tally Counter

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

Given `nums`, a batch of integer error codes pulled from a service log, return how many times the code `target` appears, without using `list.count()`.

Summary

How many times does a single guest show up to the party?

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your Python against test cases
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision