백준 2439번 자바 - 별 찍기2

 

import java.io.*;
import java.util.Scanner;
import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) throws IOException{

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int n = Integer.parseInt(br.readLine());
        br.close();

        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= n-i; j++) {
                bw.write(" ");
            }
            for (int k = 1; k <=i; k++) {
                bw.write("*");
            }
            bw.write("\n");

        }
        bw.flush();
        bw.close();
    }
}