AS3.0 扑克牌乱序排列法洗牌

package 
{

    /*
     *@ClassName:package::PokerMain
     *@Intro:这是一个初始化1-52扑克牌，然后进行乱序排列进行洗牌；
     *@Author:非若
     *@Date:2015.07.22
     *@LanguageVersion:ActionScript 3.0
     *
     */
    import flash.display.Sprite;

    public class PokerMain extends Sprite
    {
        //设置扑克牌总数
        private var NUM:Number = 52;
        
        public function PokerMain()
        {
            //扑克洗牌：
            init_Shuffle();
        }
        private function init_Shuffle():void
        {
            var temp:Object = null;
            var _pokers:Vector.<Object >  = get_Poker();

            for (var m:uint=0; m<NUM; m++)
            {
                var n:uint = Math.random() * NUM;
                temp = _pokers[m];
                _pokers[m] = _pokers[n];
                _pokers[n] = temp;
                trace(m+"--:--"+_pokers[m].name+"<|>"+_pokers[m].style);
            }
        }
        private function get_Poker():Vector.<Object > 
        {
            //创建扑克牌对象池
            var POKER:Vector.<Object>=new Vector.<Object>();
            var _name:String = "";
            var _style:String = "";

            for (var r:uint=0; r<NUM; r++)
            {
                var Poker:Object = {name:null,style:null};
                var n:uint=uint((r-0.3)/4);
                var m:uint=uint((r-1)%4);

                switch (m)
                {
                    case 0 :
                        {
                            _style = "红桃";

                        };
                        break;
                    case 1 :
                        {
                            _style = "黑桃";

                        };
                        break;
                    case 2 :
                        {
                            _style = "方块";

                        };
                        break;
                    case 3 :
                        {
                            _style = "梅花";

                        };
                        break;
                    default :
                        {
                            _style = "未知";

                        };
                        break;
                }

                switch (n)
                {
                    case 0 :
                        _name = "K";
                        break;
                    case 1 :
                        _name = "A";
                        break;
                    case 11 :
                        _name = "J";
                        break;
                    case 12 :
                        _name = "Q";
                        break;
                    default :
                        _name = String(n);
                        break;
                }
                Poker.name = _name;
                Poker.style = _style;
                POKER.push(Poker);
            }
            return POKER;
        }

    }

}