I did something similar back in January 2012---I wrote the same program 30 different ways in four different languages (http://boston.conman.org/2012/01/09.1 htt

I did something similar back in January 2012---I wrote the same program 30 different ways in four different languages (http://boston.conman.org/2012/01/09.1 http://boston.conman.org/2012/01/09.1 is #1, just follow the links) and it was an interesting experience. Quite a few only differ in a few lines, or maybe cosmetically, but some versions forgo standard libraries, or read input in a radically different method, or explore different programming techniques.