Nodejs Array Shuffle shuffle()

Method Source Code

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below./*from  w w w  . jav  a 2 s.c o  m*/
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD
// GO AFTER THE REQUIRES BELOW.
//
//= require jquery
//= require jquery_ujs
//
//= require handlebars
//= require soundmanager
//
//= require_tree .

/**
 * Prototypes
 */
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];
     tempj   = this[j];
     this[i] = tempj;
     this[j] = tempi;
  }
  return this;
}

Related

1. shuffle()

   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];
        tempj   = this[j];
        this[i] = tempj;
        this[j] = tempi;
   ...
   

2. 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);
   };
   ...
   

3. 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;
   

4. 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;
   ...
   

5. 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;
   

6. 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;
   

7. 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;
   

8. shuffle()

   var binarySearch = function(needle, haystack) {
       var low = 0,
           high = haystack.length - 1;
       haystack.sort(function(x, y) {
           return x - y;
       });
       while (low <= high) {
           var middle = Math.floor((low + high) / 2);
           if (needle === haystack[middle])
   ...
   

9. shuffle()

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