[伯俊-JAVA]在帰-Silver 1星切り-10(2447)

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import java.io.*;

public class BOJ_2447 {

	// 별 저장할 배열 
	static char[][] star;
	
	static void func(int n, int x, int y) {
		if(n == 1) {
			star[x][y] = '*';
			return;
		}
		n /= 3;
		for(int i = 0 ; i < 3 ; i++) {
			for(int j = 0 ; j < 3 ; j++) {
				if(i == 1 && j == 1)
					continue;
				func(n, i * n + x, j * n + y);
				
			}
		}
	}
	
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		StringBuilder sb = new StringBuilder();
		int N = Integer.parseInt(in.readLine());
		star = new char[N][N];
		
		for(int i = 0 ; i < N ; i++) {
			for(int j = 0 ; j < N ; j++) {
				star[i][j] = ' ';
			}
		}
		func(N, 0, 0);
		
		for(int i = 0 ; i < N ; i++) {
			for(int j = 0 ; j < N ; j++) {
				sb.append(star[i][j]);
			}
			sb.append("\n");
		}
		System.out.println(sb);
	}
}