Nodejs String Shuffle shuffle()

Method Source Code

'use strict';//from w  ww .  j a  v  a 2s.  co m

String.prototype.shuffle = function () {
    var array = this.split('');

    for(var i = array.length - 1; i > 0; i--) {
        var j = Math.floor(Math.random() * (i + 1));
        var holder = array[i];
        array[i] = array[j];
        array[j] = holder;
    }

    return array.join('');
};

Related

1. shuffle()

   String.prototype.shuffle = function ()
       var characters = this.split(''),
           iterations = (characters.length-1),
           i, j, tmp;
       for (i = iterations; i > 0; i--) {
           j = Math.floor(Math.random() * (i + 1));
           tmp = characters[i];
           characters[i] = characters[j];
   ...
   

2. shuffle()

   String.prototype.shuffle = function () {
       var array = this.split('');
       var tmp, current, top = array.length;
       if (top) while (--top) {
           current = Math.floor(Math.random() * (top + 1));
           tmp = array[current];
           array[current] = array[top];
           array[top] = tmp;
       return array.join('');
   };
   

3. shuffle()

   String.prototype.shuffle = function() {
       var arr = this.arrayise();
       for (var i = arr.length - 1; i > 0; i--) {
           var randIndex = Math.floor(Math.random() * (i + 1));
           var temp = arr[i];
           arr[i] = arr[randIndex];
           arr[randIndex] = temp;
       return arr.join('');
   ...
   

4. shuffle()

   String.prototype.shuffle = function () {
     var a = this.split(""),
       n = a.length;
     for(var i = n - 1; i > 0; i--) {
       var j = Math.floor(Math.random() * (i + 1));
       var tmp = a[i];
       a[i] = a[j];
       a[j] = tmp;
     return a.join("");
   function createNewDocument() {
     var soup = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
       documentId = "",
       length = 6;
     soup = soup.shuffle();
     while( documentId.length < length ) {
       var pos = Math.floor( Math.random() * soup.length ) + 1
       documentId += soup.charAt( pos );
     window.location.href = "/edit/" + documentId;
   };