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数组、链表实现队列
阅读量:199 次
发布时间:2019-02-28

本文共 1724 字,大约阅读时间需要 5 分钟。

package task2;/** * 功能:数组、链表实现队列 * Created by liumao 2019/8/7 0007 **/public class Queue
{ public class ArrayQueue { private Object[] arrQueue; private int front; private int rear; public ArrayQueue() { } public ArrayQueue(int size) { arrQueue = new Object[size]; front = 0; rear = 0; } public boolean enQueue(Object obj) { if ((rear+1)%arrQueue.length==front){ return false; } arrQueue[rear] = obj; rear = (rear+1)%arrQueue.length; return true; } public Object deQueue() { if (rear==front){ return null; } Object obj = arrQueue[front]; front = (front+1)%arrQueue.length; return obj; } } public class LinkedQueue { Node rear; Node front; private int size; public LinkedQueue(int size) { this.size = size; this.rear = null; this.front = null; } public class Node{ T t; Node next; } public boolean isEmpty(){ return rear == null; } public void enQueue(T data) { Node oldLast = front; front = new Node(); front.next = null; if (size==0){ front=rear; }else { oldLast = front; } size ++; } public T deQueue() { T t = rear.t; rear = front.next; if (size==0) front=null; size--; return t; } }}

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