Cleaner Code in MATLAB, Part 1

(Originally posted on Doug's MATLAB Video Tutorials blog.)

This week we will define a simple problem, show some awful code that happens to work, and then make the code better by breaking down a logic check to smaller, easier to understand statements.

PS. It was actually difficult to write code this bad. I ended up writing the code well and messing it up because I could not write such awful code that actually worked properly!