백준 16505 별 [ Java ]

16505번: 별

간단한 문제라 문제를 제대로 읽지 않아서 출력실수가 계속 떴었습니다.

import java.io.*;
import java.util.*;

public class Main {
    static char[][] field;
    static int n;
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        n = Integer.parseInt(br.readLine());
        field = new char[(int)Math.pow(2,n)][(int)Math.pow(2,n)];
        for (int i=0; i<(int)Math.pow(2,n); i++)
            Arrays.fill(field[i], ' ');
        recur(0, 0, 0);
        StringBuilder sb = new StringBuilder();
        for (int i=0; i<(int)Math.pow(2,n); i++) {
            for (int j=0; j<(int)Math.pow(2,n)-i; j++) sb.append(field[i][j]);
            if (i!=(int)Math.pow(2,n)-1)
                sb.append("\n");
        }
        System.out.print(sb);
    }
    static void recur(int depth, int x, int y){
        if (depth==n){
            field[y][x] = '*';
            return;
        }
        int d = (int)Math.pow(2, depth);
        recur(depth+1, x, y);
        recur(depth+1, x+d, y);
        recur(depth+1, x, y+d);
    }
}