The Squeeze

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 its run-length encoded form (char followed by run count, e.g. 'aabcccaaa' -> 'a2b1c3a3'). If the encoded form is not strictly shorter than the original, return the original string unchanged.

Summary

aaabbb gets old fast. Shrink it.

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