Nodejs Array Shuffle shuffle()

Method Source Code

Array.prototype.shuffle = function() {
  var i = this.length, j, tempi, tempj;
  if ( i == 0 ) return false;
  while ( --i ) {
     j       = Math.floor( Math.random() * ( i + 1 ) );
     tempi   = this[i];//  www .  j a  v  a  2s .c om
     tempj   = this[j];
     this[i] = tempj;
     this[j] = tempi;
  }
  return this;
};

function asyncLoop(iterations, func, callback) {
    var index = 0;
    var done = false;
    var loop = {
        'next': function() {
            if (done) {
                return;
            }

            if (index < iterations) {
                index++;
                func(loop);

            } else {
                done = true;
                callback();
            }
        },

        'iteration': function() {
            return index - 1;
        },

        'break': function() {
            done = true;
            callback();
        }
    };
    loop.next();
    return loop;
}

Related

1. shuffle()

   Array.prototype.shuffle = function()
     var s = [];
     while (this.length) s.push(this.splice(Math.random() * this.length, 1));
     while (s.length) this.push(s.pop());
     return this;
   };
   Array.prototype.indexOf = function( element )
     for( var i in this )
       if( this[i] == element )
         return i;
     return -1;
   };
   String.prototype.copy = function()
     return this.substring( 0, this.length );
   };
   String.prototype.trim = function( ext )
     var chars = [
       " ", "\t", "\n", "\r"
     ];
     var s = this.copy();
     if( arguments.length > 0 ){
       for( var i in ext ){
         chars.push( ext[i] );
     while( chars.indexOf( s.charAt( 0 ) ) != -1 ){
       s = s.substring( 1, s.length );
     while( chars.indexOf( s.charAt( s.length-1 ) ) != -1 ){
       s = s.substring( 0, s.length-1 );
     return s;
   };
   

2. shuffle()

   Array.prototype.shuffle = function() {
     var currentIndex = this.length, temporaryValue, randomIndex;
     while (0 !== currentIndex) {
       randomIndex = Math.floor(Math.random() * currentIndex);
       currentIndex -= 1;
       temporaryValue = this[currentIndex];
       this[currentIndex] = this[randomIndex];
       this[randomIndex] = temporaryValue;
     return this;
   window.getDeck = function() {
     var ranks = [2, 3, 4, 5, 6, 7, 8, 9, 10, 'jack', 'queen', 'king', 'ace'];
     var suits = ['clubs', 'diamonds', 'hearts', 'spades'];
     var cards = [];
     ranks.forEach(function(rank, index) {
       suits.forEach(function(suit, index) {
         cards.push(rank + "_of_" + suit);
       });
     });
     return cards;
   $(function() {
   })
   

3. shuffle()

   Array.prototype.shuffle = function() {
         var tmp, rand;
         for(var i =0; i < this.length; i++){
                 rand = Math.floor(Math.random() * this.length);
                 tmp = this[i];
                 this[i] = this[rand];
                 this[rand] = tmp;
   

4. shuffle()

   Array.prototype.shuffle = function(){
     for (var i = 0; i < this.length; i++){
         var a = this[i];
         var b = Math.floor(Math.random() * this.length);
           this[i] = this[b];
           this[b] = a;
   module.exports = {
   ...
   

5. shuffle()

   Array.prototype.shuffle = function() {
       var size = this.length;
       for (var i = 0; i < size; i++) {
           var j = Math.floor(Math.random() * size);
           if (i !== j) {
               var tmp = this[i];
               this[i] = this[j];
               this[j] = tmp;
   };
   

6. shuffle()

   Array.prototype.shuffle=function() {
     this.sort(function() { return Math.random()-0.5;});
   };
   Array.prototype.remove = function(from, to) {
     var array=this;
     var rest = array.slice((to || from) + 1 || array.length);
     array.length = from < 0 ? array.length + from : from;
     return array.push.apply(array, rest);
   };
   ...
   

7. shuffle()

   Array.prototype.shuffle = function() {
     var currentIndex = this.length, temporaryValue, randomIndex;
     while (0 !== currentIndex) {
       randomIndex = Math.floor(Math.random() * currentIndex);
       currentIndex -= 1;
       temporaryValue = this[currentIndex];
       this[currentIndex] = this[randomIndex];
       this[randomIndex] = temporaryValue;
     return this;
   

8. shuffle()

   Array.prototype.shuffle = function (){ 
       for(var j, x, i = this.length; i; j = Math.floor(Math.random() * i), x = this[--i], this[i] = this[j], this[j] = x);
       return this;
   };
   String.prototype.hashCode = function(){
     var hash = 5381;
     for (i = 0; i < this.length; i++) {
       char = this.charCodeAt(i);
       hash = ((hash<<5)+hash) + char;
   ...
   

9. shuffle()

   Array.prototype.shuffle = function () {
     var i = this.length, j, temp;
     if ( i === 0 ) return false;
     while ( --i ) {
        j = Math.floor( Math.random() * ( i + 1 ) );
        temp = this[i];
        this[i] = this[j]; 
        this[j] = temp;