1036 跟奥巴马一起编程 (15 分)

题目要求：

代码：

import java.util.Scanner;

public class Main {
    

    public static void main(String[] args) {
    

        //輸入
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        String c = scanner.next();
        //先打印第一行
        for (int i = 0; i < n; i++){
    
            System.out.print(c);
        }
        System.out.println();
        //再打印n-1行
        for (int i = 0; i < Math.round(n * 0.5-2); i++){
    
            System.out.print(c);
            for (int k = 0; k < n-2; k++)
                System.out.print(" ");
            System.out.println(c);
        }
        //打印最后一行
        for (int i = 0; i < n; i++){
    
            System.out.print(c);
        }
    }
}

结果：