blackmjck / array.shuffle.js

Created February 12, 2014


    
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            /**
 * Extends the primitive Array with a random sort function
 *
 * @returns {Array}
 */
;Array.prototype.shuffle = function() {
 
    var arr = this,
        m = arr.length,
        t,
        i;
 
    // While there remain elements to shuffle…
    while ( m ) {
 
        // Pick a remaining element…
        i = Math.floor( Math.random() * m-- );
 
        // And swap it with the current element.
        t = arr[ m ];
        arr[ m ] = arr[ i ];
        arr[ i ] = t;
    }
 
    return arr;
 
};