题解 | 从单向链表中删除指定值的节点

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        int n = in.nextInt();
        int p = in.nextInt();
        int[] val = new int[10001];
        Arrays.fill(val, -1);
        for(int i = 0; i < n-1;i++){
            int a = in.nextInt();
            int b = in.nextInt();
            val[a] = val[b];
            val[b] = a;
        }
        int del = in.nextInt();
        while(p != -1){
            if(p != del){
                System.out.print(p+" ");   
            }
            p = val[p];
        }
        in.close();
        
    }
}