알고리즘 - 백준, 2439번 별찍기 -2

import java.io.*;
import java.util.*;

public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));   
        StringBuilder sb = new StringBuilder();
        int value = Integer.parseInt(br.readLine());
        
        	for (int i = 1; i <= value; ++i) {
			    for (int j = 1; j <= value - i; ++j) {
				    System.out.print(" ");
			    }
			    for (int j = 1; j <= i; ++j) {
				    System.out.print("*");
			    }
			System.out.println();
		}
        String result = sb.toString();
        System.out.print(result);
        
    }
}