About Daplie: We're taking back the Internet!
--------------
Down with Google, Apple, and Facebook!
We're re-decentralizing the web and making it read-write again - one home cloud system at a time.
Tired of serving the Empire? Come join the Rebel Alliance:
jobs@daplie.com | [Invest in Daplie on Wefunder](https://daplie.com/invest/) | [Pre-order Cloud](https://daplie.com/preorder/), The World's First Home Server for Everyone
knuth-shuffle
=============
The Fisher-Yates (aka Knuth) shuffle for Browser and Node.js
* [Mike Bostock's Fisher–Yates Shuffle Visualization](http://bost.ocks.org/mike/shuffle/)
* [How to randomize/shuffle a JavaScript array](http://stackoverflow.com/questions/2450954/how-to-randomize-shuffle-a-javascript-array)
* [Fisher-Yates Shuffle on Wikipedia](http://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle)
* [Doing the Microsoft Shuffle: Algorithm Fail in Browser Ballot](http://www.robweir.com/blog/2010/02/microsoft-random-browser-ballot.html)
* [knuth-shuffle on NPM](https://npmjs.org/package/knuth-shuffle)
'nuf said.
The Fisher-Yates (Knuth) Shuffle
===
As Microsoft learned the hard way (see article below), `function random() { return 0.5 - Math.random() }` turns out to be no-so-random at all.
The fisher-yates shuffle is an algorithm so simple that even
[IEEE floating point math](http://blogs.adobe.com/bparadie/2011/11/22/0-2-0-1-0-30000000000000004/)
can't screw it up!
I put this on npm as `knuth-shuffle` because `fisher-yates-shuffle`
was just too long of a name and shuffle was already taken.
Browser Example
===
```html
```
```javascript
(function () {
'use strict';
var a = [2,11,37,42]
, b
;
// The shuffle modifies the original array
// calling a.slice(0) creates a copy, which is assigned to b
b = window.knuthShuffle(a.slice(0));
console.log(b);
}());
```
Node Example
===
```bash
npm install -S knuth-shuffle
```
```javascript
(function () {
'use strict';
var shuffle = require('knuth-shuffle').knuthShuffle
, a = [2,11,37,42]
, b
;
// The shuffle modifies the original array
// calling a.slice(0) creates a copy, which is assigned to b
b = shuffle(a.slice(0));
console.log(b);
}());
```