Merge pull request #35 from AlgorithmWithGod/khj20006

[20250204] BOJ / 실버4 / 별 찍기 - 23 / 권혁준

Author: ShinHeeEul

khj20006/202502/04 BOJ S4 별 찍기 - 23.md

@@ -0,0 +1,72 @@
+```java
+
+import java.util.*;
+import java.io.*;
+
+class Main {
+	
+	// IO field
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+	static StringTokenizer st;
+
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() {return Integer.parseInt(st.nextToken());}
+	static long nextLong() {return Long.parseLong(st.nextToken());}
+	static void bwEnd() throws Exception {bw.flush();bw.close();}
+	
+	// Additional field
+
+
+	public static void main(String[] args) throws Exception {
+
+		int N = Integer.parseInt(br.readLine());
+		
+		for(int i=0;i<N;i++) bw.write('*');
+		for(int i=0;i<2*N-3;i++) bw.write(' ');
+		for(int i=0;i<N;i++) bw.write('*');
+		bw.write("\n");
+		
+		for(int i=1;i<=N-2;i++) {
+			for(int j=0;j<i;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<N-2;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<2*N-3-2*i;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<N-2;j++) bw.write(' ');
+			bw.write('*');
+			bw.write("\n");
+		}
+		
+		for(int i=0;i<N-1;i++) bw.write(' ');
+		bw.write('*');
+		for(int j=0;j<N-2;j++) bw.write(' ');
+		bw.write('*');
+		for(int j=0;j<N-2;j++) bw.write(' ');
+		bw.write('*');
+		bw.write("\n");
+		
+		for(int i=N-2;i>=1;i--) {
+			for(int j=0;j<i;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<N-2;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<2*N-3-2*i;j++) bw.write(' ');
+			bw.write('*');
+			for(int j=0;j<N-2;j++) bw.write(' ');
+			bw.write('*');
+			bw.write("\n");
+		}
+		
+		for(int i=0;i<N;i++) bw.write('*');
+		for(int i=0;i<2*N-3;i++) bw.write(' ');
+		for(int i=0;i<N;i++) bw.write('*');
+		bw.write("\n");
+		
+		bwEnd();
+	}
+
+}
+
+```