2439

 

 

 

 

 

 

 

import java.util.Scanner;
public class Main {
 
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
 
		int N = in.nextInt();
		in.close();
 
		for (int i = 1; i <= N; i++) {
			for (int j = 1; j <= N - i; j++) {
				System.out.print(" ");
			}
			for (int k = 0; k < i; k++) {
				System.out.print("*");
			}
			System.out.println();
		}
    }
}

 

틀린 이유>

 

11: j <= N - 1 이라고 쓰고, j-- 라고 썼음