DataDriven
LearnPracticeInterviewDiscussDailyJobs

Single Element Among Pairs

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
L4

Interview Prompt

Given a sorted list of integers where every element appears exactly twice except one that appears once, return the unique element.

Summary

One element has no partner.

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

Related

  • All Mock Interviews
  • Practice Mode (untimed)
  • Python Interview Questions
  • Data Engineering Interview Prep Guide
  • Practice Problems
  • Daily Challenge