单向链表中间节点 华为OD真题 100

 

import java.util.Scanner;
import java.util.*;
 
 
 
class Main {
    // 节点定义
    public static class ListNode {
        public int value;
        public int next;
    
        public ListNode(int value, int next) {
            this.value = value;
            this.next = next;
        }
    }
	public static void main(String[] args) {
        // 处理输入
        Scanner in = new Scanner(System.in);
        String head_node_str = in.nextLine();
        String[] head_info = head_node_str.split(" ");
        int head_addr = Integer.valueOf(head_info[0]);
        int count = Integer.valueOf(head_info[1]);
 
        HashMap node_info = new HashMap();
        for (int i=0;i