[백준] 2448 별 찍기 - 11 [자바]

 

 

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https://st-lab.tistory.com/95

[백준] 2447번 : 별 찍기 - 10 - JAVA [자바]

https://www.acmicpc.net/board/view/26520

글 읽기 - ★☆★☆★ [필독] 별찍기 - 11 FAQ ★☆★☆★

 

 

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	static StringBuilder sb = new StringBuilder();
	static int N;
	static char[][] arr;
 	public static void main(String arg[]) throws IOException {
 		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
 		N = Integer.parseInt(br.readLine());
 		arr = new char[N][N*2-1];
 		for(int i = 0; i < N; i++) {
 			for(int j = 0; j < N*2-1; j++) {
 				arr[i][j] = ' ';
 			}
 		}
 		func(N, N-1, 0);
 		for(int i = 0; i < N; i++) {
 			for(int j = 0; j < N*2-1; j++) {
 				sb.append(arr[i][j]);
 			}
 			sb.append('\n');
 		}
 		System.out.println(sb.toString());
 	}
 	static void star(int rx, int ry) {
 		arr[rx][ry] = '*';
 		arr[rx+1][ry-1] = '*';
 		arr[rx+1][ry+1] = '*';
 		for(int i = 0; i < 5; i++) {
 			arr[rx+2][ry-2+i] = '*';
 		}
 	}
 	static void func(int depth, int first_space, int start_x) {
 		if(depth == 3) {
 			star(start_x, first_space);
 			return;
 		}
 		int size = depth/2;
 		func(size, first_space, start_x); // 6 12 0
 		func(size, first_space-size, start_x+size);
 		func(size, first_space+size, start_x+size);
 	}
}