AS3 Shuffle Array

This reorders the elements of an array into a random order.

var anArray:Array = [1,1,1,1,1,1,2,2,2,2,2,2,3,3,3,3,3,3,4,4,4,4,4];
anArray=shuffleArray(anArray);

function shuffleArray(arr:Array):Array{
 var arr2:Array = [];
 while (arr.length > 0){
  arr2.push(gendersArray.splice(Math.round(Math.random() * (arr.length - 1)), 1)[0]);
 }
 return arr2;
}