The Lone Traveler
A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L3
Problem
Given a string, return the first character (leftmost) that appears exactly once in the string. If all characters repeat, return an empty string.
Summary
One character stands apart from the crowd.
Practice This Problem
Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.