Comments on: Implementing Array.shuffle() in Actionscript

By: Ferhat

Ferhat — Fri, 28 May 2010 01:46:29 +0000

Thanks Dave.
I finished home-work.
You had help me.

By: Backhander

Backhander — Mon, 19 Apr 2010 01:14:14 +0000

Thanks Dave – tasty.

By: Akkara

Akkara — Mon, 14 Dec 2009 14:23:52 +0000

Thank you!

By: KUCaldog187

KUCaldog187 — Tue, 24 Nov 2009 23:46:09 +0000

hey Dave thanks alot. I appreciate your code and explanation. Im new to action script and i wasnt looking forward to spending a few hours trying to figure this out. All the other examples i read were too complex. 3 lines of code…you can beat that really. Thanks Alot!

By: Davide Zanotti

Davide Zanotti — Mon, 12 Oct 2009 08:23:30 +0000

@deesnay: Thank you so much ;-)

By: deesnay

deesnay — Mon, 12 Oct 2009 07:59:49 +0000

Hi Dave, thank you very much for this very smart code.
I had tried another solution by MRSTEEL, that required much more code, and was focusing on execution speed. But testing it on a small array (23 items), I realized the randomness seemed very poor: the first item of the original array seemed to remain in the first position half of the time, and seemed to never make it further than fourth position.
Your code doesn’t seem to suffer from the same defect.
So as far as I’m concerned, your code is very satisfying in terms of lines spared, and quality of randomness.

By: Rich

Rich — Fri, 18 Sep 2009 11:16:23 +0000

Hey Dave,

Thanks for the AS3 post & comments on how to implement the shuffle code,
nice work!

btw, I enjoy using Arduino Board (from Italy) to create projects that cross code, design & art – might be something you’re interested in? – check my site if you are curious.

Cheers mate,

/Rich

By: Mark

Mark — Thu, 17 Sep 2009 13:53:59 +0000

Yes, thank you very much!

By: Davide Zanotti

Davide Zanotti — Mon, 10 Aug 2009 16:20:19 +0000

Hi Mark, that “arr” is an argument (the original array to shuffle), imagine a function like this:

public function shuffle(arr:Array):Array {

var arr2:Array = [];

while (arr.length > 0) {
arr2.push(arr.splice(Math.round(Math.random() * (arr.length – 1)), 1)[0]);
}

return arr2;

}

Is it clear now?

By: Mark

Mark — Mon, 10 Aug 2009 15:13:33 +0000

Hi!
I don’t understand where that arr thing is coming from.
“which will contains the elements from the base ordered array” – Could you explain what you mean? Please help me! The code looks so easy :D