The First Stranger
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 (leftmost) character that appears exactly once. Return an empty string if no such character exists.
Summary
In a crowd, the unique ones stand out first.
Practice This Problem
Solve this Python problem with real code execution. DataDriven runs your Python code in a real environment and grades it automatically.