Rosetta presents solutions, in many languages, of classical computer programming tasks in a compact and extensive list in alphabetical order:

http://rosettacode.org/wiki/Rosetta_Code

Here, for example, is a list of solutions for the “8 queens” chess problem. Ways to place 8 queens on a chessboard with none of them threatening another:

https://rosettacode.org/wiki/N-queens_problem

Actually, the N queens problem (parametric solutions – e.g., 6 queens on a 6x6 board).

And here’s a list of solutions to represent a positive decimal integer as a Roman numeral:

www.rosettacode.org/wiki/Roman_numerals/Encode

Many other tasks too. I love this kind of stuff!