1091 N-Defensive Number (15 points)

题目要求：

代码：

import java.util.Scanner;

public class Main {
    
    public static void main(String[] args) {
    
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        //
        for(int i = 0; i < n;i++) {
    
            int num = scan.nextInt();
            boolean flag = true;
            
            for (int j = 1; j < 10; j++) {
    
                String s = j * num * num + "";
                //Determine if the input string ends
                if (s.endsWith(num+"")){
    
                    System.out.println(j + " " + s);
                    flag = false;
                    break;
                }
            }
            if (flag){
    
                System.out.println("No");
            }
        }
    }
}

结果：