Nodejs Array Shuffle shuffle()

Here you can find the source of shuffle()

Method Source Code

// Knuth shuffle//from w  w w  .ja  va  2s .c o m
// - source: http://www.htmlblog.us/random-javascript-array
Array.prototype.shuffle = function() {
  var i = this.length,
      j,
      temp;

  while( --i ) {
    j = Math.floor( Math.random() * (i - 1) );
    temp = this[i];
    this[i] = this[j];
    this[j] = temp;
  }
}

Related

  1. shuffle()
    Array.prototype.shuffle = function() {
      var m = this.length, i;
      while (m) {
        i = (Math.random() * m--) >>> 0;
        [this[m], this[i]] = [this[i], this[m]]
      return this;
    };
    
  2. shuffle()
    Array.prototype.shuffle = function () {
        var newArr = [];
        for (var i = 0; i < this.length; i++) {
            var currElem = this[i];
            var rand = Math.floor(Math.random() * this.length);
            this[i] = this[rand];
            this[rand] = currElem;
        return this;
    ...
    
  3. shuffle()
    Array.prototype.shuffle = function() {
      var i = this.length
      var j
      var temp
      if (i > 1) {
        while (--i) {
          j = Math.floor(Math.random() * (i + 1))
          temp = this[i]
          this[i] = this[j]
    ...
    
  4. 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;
    
  5. shuffle()
    Array.prototype.shuffle = function() {
       var len = this.length;
      var i = len;
       while (i--) {
         var p = parseInt(Math.random()*len);
        var t = this[i];
        this[i] = this[p];
        this[p] = t;
    };
    Array.prototype.filter_sort = function () {
      return this.sort(function(a,b){return a-b});
    };
    
  6. 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;
    ...
    
  7. 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;
    ...
    
  8. shuffle()
    Array.prototype.shuffle = function () {
        var i, swap, ind;
        for (i = this.length - 1; i > 0; --i) {
            ind = parseInt(Math.random() * i);
            swap = this[i];
            this[i] = this[ind];
            this[ind] = swap;
        return this;
    ...
    
  9. shuffle()
    Array.prototype.shuffle = function () {
      var rand, value, i;
      if (!this || this.length === 0) { return this; }
      for (i = 0; i < this.length; i++) {
        rand        = Math.floor(Math.random() * i);
        value       = this[i];
        this[i]     = this[rand];
        this[rand]  = value;
      return this;
    };