RLE/D is the simplest way to compress data http://en.wikipedia.org/wiki/Run-length_encoding
Implement RLE/D in shortest/simplest way possible using your favourite language.
You can code the solution in any programming language during the weekend and have to submit it to email@example.com latest on Sunday November 3rd.
On Monday we will upload the solutions on GitHub https://github.com/OLIMEX/WPC
You can play with your real name or with nick if you want to be anonymous, we will not disclosure your personal info if you do not want to.