题解 | #从单向链表中删除指定值的节点#，本题难在理解题意上

import java.util.ArrayList;
import java.util.Scanner;

public class Main2 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) {
            int n = in.nextInt();
            int index = in.nextInt();
            ArrayList<Integer> list = new ArrayList<>();
            list.add(index);
            for (int i = 0; i < n - 1; i++) {
                int nextInt = in.nextInt();
                int tou = in.nextInt();
                list.add(list.indexOf(tou) + 1 ,nextInt);
            }
            int remove = in.nextInt();
            list.remove(list.indexOf(remove));
            for (Integer integer : list) {
                System.out.print(integer + " ");
            }
        }
    }
}