The Repeat Offenders

A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

easy

Seniority

L6

Problem

Given a list, return the values that appear more than once, each listed only once, in the order of their first appearance in the input.

Summary

Repetition is a clue.

Practice This Problem

Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.