백준 2445번: 별 찍기 - 8 [입출력] - Java

www.acmicpc.net/problem/2445

2445번: 별 찍기 - 8

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		
		//위쪽
		for (int i = 1; i <=N; i++) {
			
			for (int j = 1; j <= i; j++) {
				System.out.print("*");
			}
			
			for (int j = 1; j <= (N-i)*2; j++) {
				System.out.print(" ");
			}
			for (int j = 1; j <= i; j++) {
				System.out.print("*");
			}
			
			System.out.println();
		}
		
		//아래쪽
		for (int i = 1; i <=N-1; i++) {
			
			for (int j = 1; j <= N-i; j++) {
				System.out.print("*");
			}
			
			for (int j = 1; j <= i*2; j++) {
				System.out.print(" ");
			}
			for (int j = 1; j <= N-i; j++) {
				System.out.print("*");
			}
			
			System.out.println();
		}
	}

}