An Enigma cipher machine implemented in an Excel spreadsheet by a non-programmer (williamedwardscoder.tumblr.com)
recommended by 1 user | 2012 | 103 points by willvarfar | cryptography | original thread |
One user recommended this thread. What they said:
coroxout Aug 1, 2012 | on: Play blackjack in Excel | context

Ha, that's great.

I knocked up a more or less working FreeCell solitaire in Excel one bored afternoon, so Blackjack should certainly be possible in plain old Excel VBA.

Most impressive Excel things I've seen by other people: a Game of Life (I'm guessing not SeanDav's, but who knows!), a Dijkstra's algorithm demo which let you resize cells and recalculated the shortest distance between two cells, and this rather impressive Enigma cipher encoder/decoder: http://news.ycombinator.com/item?id=3755656