백준 - 2438번 별 찍기 - 1

코드

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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int T = Integer.parseInt(br.readLine());

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < T; i++) {
            for (int j = 0; j <= i; j++) {
                sb.append("*");
            }
            sb.append("\n");
        }

        System.out.println(sb);
    }
}