摘要：/** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ class Solution { 阅读全文

摘要：参考代码 1 import java.util.Scanner; 2 3 public class Test { 4 public static void main(String[] args) { 5 Scanner in = new Scanner(System.in); 6 int n = i 阅读全文