The Code Expander

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 an RLE-encoded string where each run is a decimal count followed by a character, return the decoded string. Counts can be multi-digit.

Summary

Compressed messages need a decoder to come alive.

Practice This Problem

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