public class Ch12 {
    public static void main(String[] args){
        writeStars(25);

    }
    public static void writeStars(int n){
        if (n == 0){
            // base case
            System.out.println();
        } else {
            // recursive case
            System.out.print("*");
            writeStars(n - 1);
        }
    }
}