#yyds干货盘点# 单链表实现栈

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栈是一种“后进先出”的数据结构，对栈的插入和删除操作都是在栈头位置进行的，这与在单链表的表头插入和删除元素的原理类似，因此可以用单向链表实现栈。
单链表实现栈的java代码：

package parking;

import java.util.Stack;

class Node

Object data;
Node next;

public Node(Object data)
this.data = https://www.songbingjia.com/android/data;

class LinkNode
private Node head;
private int size;

public LinkNode()
this.head = null;
this.size = 0;

// 判断是否为空
public boolean isEmpty()
return size == 0 ? true : false;

// 头插入法
public void addHNode(Node node)
if (head == null)
head = node;
else
node.next = head;
head = node;

size++;

// 输出头结点，不删除
public Object sysHNode()
if (head == null)
return null;

Object obj = head.data;
return obj;

// 输出头结点,并删除
public Object sysHnode()
if (head == null)
return null;

Object obj = head.data;
if (head.next == null)
head = null;
else
head = head.next;

size--;
return obj;

public int getSize()
// TODO Auto-generated method stub
return size;

public class LinkStack

private LinkNode link;

LinkStack()
link = new LinkNode();

// 判断是否为空
public boolean isEmpty()
return link.isEmpty();

// 入栈
private void push(Object obj)
Node node = new Node(obj);
link.addHNode(node);

// 出栈
private Object pop()
return link.sysHnode();

// 出栈，但不删除头结点
private Object peek()
return link.sysHNode();

// 获取栈大小
private int size()
return link.getSize();

public static void main(String[] args)
LinkStack stack = new LinkStack();
int i;
for (i = 0; i < 5; i++)
stack.push(i);

System.out.println("栈的大小:" + stack.size());
System.out.println("栈顶元素:" + stack.peek());
while (!stack.isEmpty())
System.out.print(stack.pop() + "--> ");