MyQueue.java

/*
 * created by Harry 2017-2-22 13:06:43
 * 实现简单的队列
 */
package com.github.HarryHook.coding2017.basic;

import java.util.*;

public class MyQueue {
    private MyArrayList elementData = new MyArrayList();
    private int size = 0;

    // 入队
    public void enQueue(Object o) {
	elementData.add(o);
	size++;
    }

    // 出队
    public Object deQueue() {
	if (isEmpty()) {
	    throw new NoSuchElementException();
	}
	Object Data = elementData.remove(0);
	size--;
	return Data;
    }

    // 判断队列是否为空
    public boolean isEmpty() {
	return size() == 0;
    }

    // 队列中元素个数
    public int size() {
	return size;
    }

   
}