Java 1.8使用数组实现循环队列
作者:因吉
这篇文章主要为大家详细介绍了Java 1.8使用数组实现循环队列,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了Java 1.8使用数组实现循环队列的具体代码,供大家参考,具体内容如下
1、引入
使用数组实现循环队列,功能如下:
1)isFull():队列满?
2)isEmpty():队列空?
3)add():添加元素。
4)pop():移除元素。
5)display():展示队列。
6)getSize():获取当前队列元素个数。
2、代码
package DataStructure; import java.util.Arrays; /** * @author: Inki * @email: inki.yinji@qq.com * @create: 2020 1022 * @last_modify: 2020 1023 */ public class MyArrayQueue<AnyType> { /** * The default max size of my array queue. */ private final int DEFAULT_MAX_SIZE = 10; /** * The max size of my array queue. */ private int maxSize; /** * The front of my array queue. */ private int front; /** * The rear of my array queue. */ private int rear; /** * Using array to simulate queue. */ private AnyType[] arrQueue; /** * The first constructor. */ public MyArrayQueue() { this(DEFAULT_MAX_SIZE); }//Of the first constructor /** * The second constructor. */ public MyArrayQueue(int paraMaxSize) { maxSize = paraMaxSize + 1; arrQueue = (AnyType[]) new Object[maxSize]; front = 0; rear = 0; }//Of the second constructor /** * Queue is full? * @return: * True if full else false. */ public boolean isFull() { return (rear + 1) % maxSize == front; }//Of isFull /** * Queue is empty? * @return: * True if empty else false. */ public boolean isEmpty() { return front == rear; }//Of isEmpty /** * Add element. * @param: * paraVal: * The given value. */ public void add(AnyType paraVal) { if(isFull()) { System.out.println("The queue is full."); return; }//Of if arrQueue[rear] = paraVal; rear = (rear + 1) % maxSize; }//Of add /** * Pop element. */ public AnyType pop() { if (isEmpty()) { throw new RuntimeException("The queue is full."); }//Of if AnyType retVal = arrQueue[front]; front = (front + 1) % maxSize; return retVal; }//of pop /** * Display array queue. */ public void display() { if (isEmpty()) { System.out.println("The queue is empty."); return; }//Of if System.out.print("The queue is: ["); int i = front; while (i != (rear + maxSize- 1) % maxSize) { System.out.printf("%s, ", arrQueue[i]); i = (i + 1) % maxSize; }//Of while System.out.printf("%s]", arrQueue[rear - 1]); }//Of display /** * Get current size of my array queue. */ public int getSize() { return (rear - front + maxSize) % maxSize + 1; }//Of getSize /** * The main **/ public static void main(String[] args) { MyArrayQueue <Integer> testArrayQueue = new MyArrayQueue<>(3); testArrayQueue.add(1); testArrayQueue.add(2); testArrayQueue.add(4); testArrayQueue.pop(); testArrayQueue.display(); }//Of main }//Of MyArrayQueue
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。