Merge pull request #673 from AlgorithmWithGod/suyeun84

[20250816] BOJ / G5 / 별 찍기 - 10 / 김수연

Author: ShinHeeEul

suyeun84/202508/16 BOJ G5 별 찍기 - 10.md

@@ -0,0 +1,34 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class boj2447 {
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static StringTokenizer st;
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() {return Integer.parseInt(st.nextToken());}
+	static StringBuilder sb = new StringBuilder();
+
+	public static void main(String[] args) throws Exception {
+		nextLine();
+		int N = nextInt();
+		for (int i = 0; i < N; i++) {
+			for (int j = 0; j < N; j++) {
+				star(i, j, N);
+			}
+			sb.append('\n');
+		}
+		System.out.println(sb);
+	}
+	
+	static void star(int i, int j, int n){
+        if((i / n) % 3 == 1 && (j / n) % 3 == 1){
+        	sb.append(' ');
+       }
+       else{
+           if(n == 1) sb.append('*');
+           else star(i, j, n / 3);
+       }
+   }
+}
+```