package com.coding.basic;
public class Queue {
private LinkedList list = new LinkedList();
public void enQueue(Object o) {
list.addFirst(o);
}
public Object deQueue() {
if (isEmpty()) {
throw new IndexOutOfBoundsException();
}
Object object = list.removeLast();
return object;
}
public boolean isEmpty() {
return list.size() == 0;
}
public int size() {
return list.size();
}
}