大顶堆实现一个优先队列。对于队列的操作应该至少支持下列几种指令： Void enqueue[int ObjectID, int Priority] Int dequeue[]

				class Object {
				public :
					int ID;														//id of the Object 
					int priority;												//priority of the Object
					Object(){ID=0;priority=0;}
					Object(int i,int p) {ID=i;priority = p;}
				};