Run-Length Encoding

Challenge Overview

Implement run-length encoding and decoding.

Visit the run-length-encoding exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @rzuckerm (⭐ 1) — View on Exercism
Solution 2 by @ffattizzi (⭐ 0) — View on Exercism
Solution 3 by @Evan-Hock (⭐ 0) — View on Exercism

Source: Exercism powershell/run-length-encoding

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Function Invoke-Encode() {
    <#
    .SYNOPSIS
    Implement run-length encoding function.

    .DESCRIPTION
    Run-length encoding (RLE) is a simple form of data compression, where runs (consecutive data elements) are replaced by just one data value and count.
    
    For example we can represent the original 53 characters with only 13.
    "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWB"  ->  "12WB12W3B24WB"