Useless matter? then you didn't look at any of the links, because I found 3 that had the code posted, which I'll let you find for yourself.
This is probably a homework problem, which means you want to get code from somewhere and passing it off as your work. You a) don't learn how to design and b) plagiarize someone else's work, which means you're wasting your time going to school. You might as well go online and buy a degree, given that your degree won't be worth much as you won't graduate knowing how to properly research or design something from scratch.
Why don't you do yourself a huge favor and learn something by writing it yourself.
Regards