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The Lone Character
A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- easy
- Seniority
- senior
Problem
Our search indexer assigns a unique shard key based on the first non-repeated character in a string. Write a function called first_unique_char that takes a string and returns the first character appearing exactly once. Return an empty string if every character repeats.
Practice This Problem
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