Hi, > Here's the link to the puzzle. It's just a normal sorting. > http://www.codechef.com/problems/TSORT/ That has picked up my interest so I've used it to create a new project on GitHub for solving Codechef challenges, starting with the Turbo Sort: https://github.com/jpedrosa/codechef_takes/tree/master/tsort To make it more of a challenge I've tried to keep the samples more faithful to the challenge. Beside Ruby I plan to use Dart and Go as well to practice with them. Dart doesn't have an optimized I/O yet. :-) I've gathered some numbers here: https://github.com/jpedrosa/codechef_takes/blob/master/tsort/notes.md I also have taken part in another challenge recently and I put Ruby, Dart and Go fighting one another as well: https://github.com/jpedrosa/luhnybin/blob/master/notes.md BTW, I have no idea about the versions used by the Codechef folks to test the samples sent by the users. Hopefully they are used an up-to-date version of Ruby. :-) Cheers, Joao -- Posted via http://www.ruby-forum.com/.