function PtiorITyQueue(){
            VAR items = [];
            //封装一个新的构造函数，用于保存元素和元素的优先级
            function queueElement(element,PRiority){
                this.element = element;
                this.priority = priority;
            }
        }

function PtiorityQueue(){
   this.items = [];
    //封装一个新的构造函数，用于保存元素和元素的优先级
    function QueueElement(element,priority){
        this.element = element;
        this.priority = priority;
    }
     //1.实现插入方法
     PtiorityQueue.prototyPE.enqueue = function(element,priority){
        //1.创建queueElement对象
        var queueElement = new QueueElement(element,priority);
        //2.判断队列是否为空
        if(this.items.length == 0){
            this.items.push(queueElement);
        }else{
            var flag = false;
            for(var i =0;i<this.items.length;i++){
                if(queueElement.priority < this.items[i].priority){
                    this.items.splice(i,0,queueElement);
                    flag = true;
                    break;
                }
            }
            if(!flag){
                this.items.push(queueElement)
            }
        }
     }
}