Join Dan Gookin for an in-depth discussion in this video Eight queens, part of Code Clinic: C.
- Hello and welcome to Code Clinic. My name is Dan Gookin. Code Clinic is a course where unique problem is introduced to a collection of lynda.com authors. In response each author creates a solution by using their programming language of choice. You could learn several things from Code Clinic, different approaches to solving a problem, the pros and cons of different languages and some tips and tricks to incorporate into your own coding practices. This chapter's puzzle is a classic computer programming problem called The Eight Queens.
This famous problem is often used during interviews or to demonstrate the utility of a programming language. It requires an understanding of recursion and algorithm design and can be quite useful as an exercise in learning to program solutions for complex solutions. This problem was proposed by Max Bezzel in 1848 and solved by Franz Nauck in 1850. The problem is simple. Start with a chessboard and eight queens. Then set up the board so that no two queens can attack each other.
More than one solution is possible, in fact 92 possible solutions are possible. Examples of the solution are available in several computer languages. If you've never played chess, you'll need to understand that a queen can attack by moving an unlimited number of spaces in three directions, horizontally, vertically, and diagonally. This means that no two queens can share a row or column nor can they be located diagonally from each other. In the following movies I'll show you my solution to The Eight Queens problem. I'd encourage you to also look at the solutions from other authors in the lynda.com library.
You'll be able to compare different author styles and different languages.
Dan introduces challenges and then provides an overview of his solutions in C. Challenges include topics such as statistical analysis, searching directories for images, and accessing peripheral devices.