[백준] 2439 별 찍기 - 2 (Java)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
 
/*
 * Author : Jeonghun Cho
 * Date : December 2, 2019
 * https://www.acmicpc.net/problem/2439
 */
public class Test{
 
    public static void main(String[] args) throws IOException{
        // TODO Auto-generated method stub
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        int starLen = Integer.parseInt(br.readLine()); // 5
        for(int i=1; i<=starLen; i++) {
            for(int j=0;j<starLen-i;j++) {
                bw.write(" ");
            }
        if(starLen-i<starLen) {
            for(int k=starLen; k>starLen-i;k--) {
                bw.write("*");
                bw.flush();
            }
        }
            bw.write("\n");
            bw.flush();
        }
    }
}