队列（Queue）是限定只能在表的一端进行插入和在另一端进行删除操作的线性表。在表中，允许插入的一端称作"队列尾(tail)"，允许删除的另一端称作"队列头(front)"。-Queue (Queue) is limited to only one end of the table to insert and delete operations to the other side of the linear table. In the table to allow the insertion of one end known as the　tail queue (tail) , delete the other end of permit called a　queue first (front) .