(2446)별 찍기 -9 (자바)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
	
		Scanner inputValue = new Scanner(System.in);
		
		int number = inputValue.nextInt();
		
		for (int i=1; i<=number; i++) {
			
			for(int j=1; j<i; j++) {
				System.out.print(" ");	
			}	

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