Programming Puzzles and Our Mismatch Problem(foohack.com)
foohack.com
Programming Puzzles and Our Mismatch Problem
http://foohack.com/2008/07/programming-puzzles-and-our-mismatch-problem/#p73_some_puzzles
1 comments
projecteuler.net is my favorite for sharpening my programming, or for learning a new language.