Latest News Feb 10 6:46AM EST

The winners page is now online. Find out more about our winners and read their contest stories! We've also posted some statistics and commentary about the evolution of the contest and an analysis of some of the code

Per Rutquist is our overall MATLAB Golf Champion. He came away with two first place finishes and two second place finishes. We'll send him a MATLAB Jacket.

Congratulations to all of our first-place finishers: Guy Shechter, Imre Polik, Stijn Helsen, Per Rutquist, Claus Still, François Glineur, and Nicke. You will each receive a MATLAB toolkit.

You can now download the full testsuites used in the contest from the File Exchange.

If you'd like to hear about the next contest, sign up for our Contest Announcement mailing list. To subscribe send e-mail to lists@mathworks.com with subscribe contest-announce in the body.

All holes: frequencies, palindrome, encryption, infection, heaviest, pathfinder, and snake.

Encryption

Given a plaintext message a and a code word b, generate the coded message c with a transposition cipher. The plaintext will be lowercase chars with spaces. Spaces should be left untouched. So when

a = 'message text'
b = 'math'

apply the code word to the length of the message and then encode using a simple transposition cipher for each letter in the plaintext as determined by the corresponding letter in the code word. A transposition cipher is a simple rotation and wrap. The "a" cipher maps a -> a, or no change at all. The "b" cipher maps a -> b, b -> c, and so on. The "n" cipher is the equivalent of a rot13 encryption.

plaintext : message text
code word : mathmathmath

m cipher  : yqeemsq fqjf
a cipher  : message text
t cipher  : fxlltzx mxqm
h cipher  : tlzzhnl alea

encoded   : yelzmgx feqa