백준 9단계 no.4

<오답> : 힌트 2차원 배열을 활용해 보자.

package doit.chap5.실습;

import java.util.*;

public class Main {
    static String pattern(int n) {
        String head;
        String body;
        String bottom;
        if (n == 3) {
            head = "***";
            body = "* *";
            bottom = "***";
        } else {
            head = pattern(n / 3).repeat(n / 3);
            body = pattern(n / 3) + pattern(n / 3).replace("*", " ") + pattern(n / 3);
            bottom = pattern(n / 3).repeat(n / 3);
        }
        return head + "\n" + body + "\n" + bottom;
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        System.out.print(pattern(n));
    }
}