Nodejs Array Shuffle shuffle()

Here you can find the source of shuffle()

Method Source Code

// shuffles (randomizes an array)
// e.g. myArray.shuffle()
Array.prototype.shuffle = function() {
  var currentIndex = this.length, temporaryValue, randomIndex;
  while (0 !== currentIndex) {
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex -= 1;/*from  w w  w .j a va2s  . com*/
    temporaryValue = this[currentIndex];
    this[currentIndex] = this[randomIndex];
    this[randomIndex] = temporaryValue;
  }
  return this;
}

// returns a deck of cards
// e.g. getDeck()
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;
}

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() {
      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;
    
  3. 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;
    
  4. 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])
    ...
    
  5. 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;
    };
    
  6. shuffle()
    Array.prototype.shuffle = function () {
        for (var i = this.length - 1; i > 0; i--) {
            var j = Math.floor(Math.random() * (i + 1));
            var tmp = this[i];
            this[i] = this[j];
            this[j] = tmp;
        return this;
    };
    ...
    
  7. shuffle()
    Array.prototype.shuffle = function() {
        var i = this.length;
          while(i){
              var j = Math.floor(Math.random()*i);
              var t = this[--i];
              this[i] = this[j];
              this[j] = t;
          return this;
    ...
    
  8. shuffle()
    Array.prototype.shuffle = function() {
      var index = this.length, jIndex, temp;
      if (index == 0) return this;
      while ( --index ) {
        jIndex = Math.floor( Math.random() * ( index + 1 ) );
        temp = this[index];
        this[index] = this[jIndex];
        this[jIndex] = temp;
      return this;
    };
    
  9. shuffle()
    Array.prototype.shuffle = function() {
        for (var i = 0; i < this.length; i++) {
            var j = Math.floor(Math.random() * (this.length - i) + i);
            var temp = this[i];
            this[i] = this[j];
            this[j] = temp;
    };
    String.prototype.capitalise = function() {
    ...