A program that takes a list of words and combines the pairs of words that end and begin with the same letters, like "wherever" + "reverential" = "whereverential". It blasted Russian Twitter :D
This program takes a number of seconds and converts it into years, months, weeks, days, hours, minutes and seconds.
This program creates a list of all possible outcomes when tossing a coin for n times. I wrote it for my Statistics course because I'm too lazy to calculate with pen and paper.