백준 2446번: 별 찍기 - 9 [입출력] - Java

www.acmicpc.net/problem/2446

2446번: 별 찍기 - 9

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-1; j++) {
				System.out.print(" ");
			}
			for (int j = N*2-i; j >= i; j--) {
				System.out.print("*");
			}
			System.out.println();
		}

		// 아래쪽
		for (int i = 1; i <= N-1; i++) {
			
			for (int j = N-1; j > i; j--) {
				System.out.print(" ");
			}
			for (int j = 1; j <= (2*i+1); j++) {
				System.out.print("*");
			}
			System.out.println();
		}
	}

}