Thank you for your answers. To add something myself, the book Programming Pearls contains exactly this - short, elegant solutions, plus some extra food for thou

Thank you for your answers. To add something myself, the book Programming Pearls contains exactly this - short, elegant solutions, plus some extra food for thought and exercises. http://www.amazon.com/Programming-Pearls-2nd-Jon-Bentley/dp/0201657880 http://www.amazon.com/Programming-Pearls-2nd-Jon-Bentley/dp/...