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

Domain

Python

Difficulty

medium

Seniority

L3

Problem

Given a list of strings, return a dict mapping each distinct first character to the list of strings starting with that character, preserving input order within each group.

Summary

Same key, different rows. Bring them together.

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