package Queue;

public class LnodeQueue {
	private Lnode head;
	private Lnode tail;

	public LnodeQueue() {
		head = new Lnode();
		tail = head;
	}

	public void enQueue(String name) {
		Lnode temp = new Lnode(name);
		tail.next = temp;
		tail = temp;
	}

	public void delQueue() {
		if (head.next == null) {
			System.out.println("队列为空");
			return ;
		}
		if (head.next == tail) {
			tail = head;
		}
		head.next = head.next.next;
	}
	
	public void display(){
		if (head.next == null) {
			System.out.println("队列为空");
			return ;
		}
		for(Lnode temp=head.next;temp!=null;temp=temp.next){
			System.out.print(temp.stu.name+" ");
		}
		System.out.println("本次打印完成。");
	}
	
	public int len(){
		int length=0;
		for(Lnode temp=head.next;temp!=null;temp=temp.next){
			length++;
		}
		if(length!=0){
			return length;
		}
		return -1;
	}

}