[20251128] BOJ / G4 / 별 찍기 - 11 / 강신지

ksinji/202511/28 BOJ 별 찍기 - 11.md

@@ -0,0 +1,48 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+    static char[][] map;
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        int n = Integer.parseInt(br.readLine());
+
+        map = new char[n][2 * n - 1];
+
+        for (int i = 0; i < n; i++) {
+            Arrays.fill(map[i], ' ');
+        }
+
+        draw(0, n - 1, n);
+
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < n; i++) {
+            sb.append(map[i]).append('\n');
+        }
+
+        System.out.print(sb);
+    }
+
+    static void draw(int r, int c, int n) {
+        if (n == 3) {
+            map[r][c] = '*';
+            map[r + 1][c - 1] = '*';
+            map[r + 1][c + 1] = '*';
+            for (int i = -2; i <= 2; i++) {
+                map[r + 2][c + i] = '*';
+            }
+            return;
+        }
+
+        int half = n / 2;
+
+        draw(r, c, half);
+        draw(r + half, c - half, half);
+        draw(r + half, c + half, half);
+    }
+}
+
+```