题解 | #输出单向链表中倒数第k个结点#

import java.util.Scanner;

// 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 scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int length = scanner.nextInt();
            ListNode header = new ListNode(-1);
            ListNode temp = header;
            for (int i = 0; i < length; i++) {
                int value = scanner.nextInt();
                ListNode node = new ListNode(value);
                temp.next = node;
                temp = node;
            }

            int key = scanner.nextInt();
            for (int i = 0; i < length - key + 1; i++) {
                header = header.next;
            }

            System.out.println(header.value);

        }
    }
}

class ListNode {
    int value;
    ListNode next;

    ListNode(int value) {
        this.value = value;
    }
}