Run Length Encoding

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

Domain

Python

Difficulty

easy

Seniority

L4

Problem

Given a string, return its run-length encoding: each run of identical characters is replaced by the character followed by its run length (as a decimal integer, even if the run is 1).

Summary

AAABBB becomes 3A3B. Compress it.

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