package datastructure.queue;
import datastructure.linkedlist.LinkedList;
public class Queue {
private LinkedList list = new LinkedList();
public void enQueue(Object o) {
list.add(o);
}
public Object deQueue() {
if (list.size() == 0) {
return null;
}
return list.removeFirst();
}
public boolean isEmpty() {
return list.size() == 0;
}
public int size() {
return list.size();
}
}