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/**
 * fisher_yates_shuffle as adapted from the Perl Cookbook,
 * by Christiansen and Torkington, Published by O'Reilly
 * pass this array a reference to a function. For example:
 *    array = new Array('hi', 'bye', 'hello', 'goodbye');
 *    fisher_yates_shuffle(array);
 * and the function will pseudo randomize the elements of the
 * array in place.
 **/
function fisher_yates_shuffle(ar){
   var i, j 
   var temp
   for (i = ar.length – 1; i > 0; i––){
      j = Math.floor(Math.random() * (i + 1))
      if (i == j) continue
      temp = ar[i];
      ar[i] = ar[j];
      ar[j] = temp;
   }
}

/**
 * fisher_yates_shuffle as adapted from the Perl Cookbook,
 * by Christiansen and Torkington, Published by O'Reilly
 * pass this array a reference to a function. For example:
 *    array = new Array('hi', 'bye', 'hello', 'goodbye');
 *    fisher_yates_shuffle(array);
 * and the function will pseudo randomize the elements of the
 * array in place.
 **/
function fisher_yates_shuffle(ar){
   var i, j 
   var temp
   for (i = ar.length – 1; i > 0; i––){
      j = Math.floor(Math.random() * (i + 1))
      if (i == j) continue
      temp = ar[i];
      ar[i] = ar[j];
      ar[j] = temp;
   }
}