[백준_JAVA] 2444 별 찍기 - 7

import java.util.Scanner;

public class Main {

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