(자바) 스타 슈팅 13 – 2523

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

public class Main {
	public static void main(String() args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int N = Integer.parseInt(br.readLine());
		for(int i=1;i<=N;i++) {
			for(int j=1;j<=i;j++) {
				System.out.print("*");
			}
			System.out.println();
		}
		for(int i=N-1;i>0;i--) {
			for(int j=1;j<=i;j++) {
				System.out.print("*");
			}
			System.out.println();
		}
	}
}