Source Code
Java Sudoku Puzzle Solver
I wrote a Java program to solve Sudoku puzzles. It uses a recursive brute-force algorithm to try all possible combinations.
I wrote a Java/Swing GUI front end for my Java Sudoku puzzle solver. Its currently fairly crude.
This Java program shows how to use the above programs.
Concentric Circles Layout
I wrote this Java/Swing class, for use in conjunction with the JGraph toolkit, to layout vertices in concentric circles. Nodes are placed within concentric circles based on the number of neighbors they connect to -- most to least are placed inner to outer.
Webcal Datafile Conversion
We currently use a web-based calendar program called Webcal written by Michael Arndt. We wanted to sync our calendar with newer programs like Lookout (Outlook) and with our iPods/iPhones which all provide varying degrees of support for RFC 2445 (iCalendar).
I wrote the following Perl script to take the Webcal data file and generate an iCal data file. The following script parses iCal data files to check them for syntax errors. The scripts require perl's DateTime package as well as the iCal::Parser package.
