package lesson01;
public class Queue<E> {
private LinkedList<E> queue = new LinkedList<E>();
/**
* 入列
* @param e
*/
public void enQueue(E e){
queue.addLast(e);
}
/**
* 出列
* @return
*/
public E deQueue(){
return queue.pollFirst();
}
public boolean isEmpty(){
return size() == 0;
}
public int size(){
return queue.size();
}
}