如何在不循环的情况下获取数组

Question

我想创建一个数字数组，然后将这些数字随机化。

Answer 1

这是我提出的。它做了两件事。

1. 它获取一个从0到指定长度的数组。主要问题是什么。

2. 然后随机化该数组中的项目

   // returns [1,2,3,4,5,6,7,8,9,10] except shuffled
   var array:Array = getSequenceArray(10);
   
   
   /**
    * Get an array of the range of numbers from 1 to the number specified and randomize them.
    * */
   public function getRandomArray(count:int):Array {
       // this part is not looped. yay!
       var array:Array = new Array(count).map(function (item, index) { return index + 1; });
   
       return randomizeArray(array);;
   }
   
   /**
    * Randomize items in an array
    * */
   public function randomizeArray(original:Array, cloneArray:Boolean = true):Array {
       var length:int = original.length;
       var shuffledArray:Array = [];
       var newArray:Array = original.slice();
       var randomNumber:Number;
   
       // this is still using a loop. this loop is less of an issue than the first
       while (length) {
           randomNumber = Math.floor(Math.random() * length);
           shuffledArray.push(newArray.splice(randomNumber, 1)[0]);
           length--;
       }
   
       if (!cloneArray) {
           original.splice(0, shuffledArray.length); 
           original.push.apply(this, shuffledArray);
           return original;
       }
   
       return shuffledArray;
   
   }