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Danil Negrienko dad68cb89f run-length-encoder		2024-06-29 02:14:21 -04:00
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HELP.md	run-length-encoder	2024-06-29 02:14:21 -04:00
README.md	run-length-encoder	2024-06-29 02:14:21 -04:00
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README.md

Run-Length Encoding

Welcome to Run-Length Encoding on Exercism's Elixir Track. If you need help running the tests or submitting your code, check out HELP.md.

Instructions

Implement run-length encoding and decoding.

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"

RLE allows the original data to be perfectly reconstructed from the compressed data, which makes it a lossless data compression.

"AABCCCDEEEE"  ->  "2AB3CD4E"  ->  "AABCCCDEEEE"

For simplicity, you can assume that the unencoded string will only contain the letters A through Z (either lower or upper case) and whitespace. This way data to be encoded will never contain any numbers and numbers inside data to be decoded always represent the count for the following character.

Source

Created by

@Teapane

Contributed to by

@angelikatyborska
@CoderDennis
@Cohen-Carlisle
@dalexj
@daveyarwood
@devonestes
@lex57ukr
@lpil
@neenjaw
@parkerl
@sotojuan
@waiting-for-dev

Based on

Wikipedia - https://en.wikipedia.org/wiki/Run-length_encoding