백준 2522 java

import java.util.Scanner;

public class bj2522 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N;

        N = scanner.nextInt();
        for(int i = 1; i <= N; i++)
        {
            for(int j = N - i; j >= 1; j--)
            {
                System.out.print(' ');
            }
            for(int j = 1; j <= i; j++)
            {
                System.out.print('*');
            }
            System.out.println();
        }
        for(int i = 1; i < N; i++)
        {
            for(int j = 1; j <= i; j++) {
                System.out.print(' ');
            }
            for(int j = 1; j <= N - i; j++)
            {
                System.out.print('*');
            }
            System.out.println();
        }

        scanner.close();
    }
}