백준 10991번 : 별 찍기 - 16

import java.io.*;

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));
        StringBuilder sb = new StringBuilder();
        int n = Integer.parseInt(br.readLine());
        String b = " *";
        String c = " ";
        for(int i = 1; i < n + 1; i++){
            if (n - i != 0){
                sb.append(c.repeat(n - i - 1));
                sb.append(b.repeat(i)).append("\n");
            } else {
                sb.append(b.repeat(i).trim()).append("\n");
            }
        }
        bw.write(sb.toString());
        bw.flush();
        bw.close();
    }
}