public class TriangleUtilities {

    public static String getRow(int numberOfStars) {
        StringBuilder star = new StringBuilder();
        
        
        for (int i = 0; i < numberOfStars; i++) {
            star.append("*");
        }
        return star.toString(); 
    }
    
    public static String getTriangle(int numberOfRows) {
        StringBuilder row = new StringBuilder();
        for (int j = 1; j < numberOfRows + 1; j++) {
            
            String triangle = getRow(j);
            
            row.append(triangle + "\n");
        
    }
    return row.toString();
}


    public static String getSmallTriangle() {
        return getTriangle(4);
}

    public static String getLargeTriangle() {
        return getTriangle(9);
    }
}