The First Encounter

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 a dict mapping each distinct character to the index of its first occurrence.

Summary

Every character has a story - but only if you remember where it started.

Practice This Problem

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