Java数据结构——单链表

//链表的实体类
class Node{
    public int data;
    public Node next;
    public Node(int data) {
        this.data = data;
    }
}

package org.learn.link;

public class TestList {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        MyLinkedLsit mylist = new MyLinkedLsit();
        mylist.addNodeH(22);
        mylist.addNodeH(32);
        mylist.addNodeH(25);
        mylist.addNodeH(11);
        
        MyLinkedLsit mylist1 = new MyLinkedLsit();
        mylist.print();
        System.out.println("链表的长度："+mylist.getLength());
        mylist.delete(1);
        mylist.print();
        
    }

}

class MyLinkedLsit{
    
    //初始化头结点（不存放具体数据）
    Node head = new Node(0);
    
    //添加结点(尾插法)
    public void addNodeT(int data) {
        Node newnode = new Node(data);//生成新结点
        Node cur = head;//当前结点
        while(cur.next != null) {//找到最后一个结点
            cur = cur.next;
        }
        cur.next = newnode;
    }
    
    //添加结点（头插法）
    public void addNodeH(int data) {
        Node newnode = new Node(data);//生成新结点
        Node cur = head;//当前结点
        newnode.next = head.next;
        head.next = newnode;
    }
    //获取链表的长度
    public int getLength() {
        int length = 0;
        Node cur = head.next;
        while(cur != null) {
            length++;
            cur = cur.next;
        }
        return length;
    }
    //删除第k个结点
    public void delete(int k) {
        if(k<1 || k>getLength()) {
            System.out.println("待删除的结点不存在");
            return;
        }
        int i = 1;
        Node cur = head;
        while(cur.next != null) {
            if(i == k) {
                cur.next = cur.next.next;
                return;
            }
            else
            {
                cur = cur.next;
                i++;
            }       
        }
    }
    
    //显示结点
    public void print() {
        Node cur = head.next;
        while(cur != null) {
            System.out.print(cur.data +" ");
            cur = cur.next;
        }
        System.out.println();
    }
    
}

//链表结点的实体类
class Node{
    int data;//结点数据
    Node next;//下一个结点

    public Node(int data) {
        this.data = data;
    }    
    
}