public class TriangleUtilities {
    public static String getRow(int numberOfStars) {
        String result= "";
        for(int i=0; i<numberOfStars; i++) {
            result+= "*";
        }

        return result;
    }

    public static String getTriangle(int numberOfRows) {
        String triangle="";
        for(int i=1; i<=numberOfRows; i++) {
            for(int z=1; z<=i; z++){
                triangle += "*";

            }
            triangle+="\n";

        }

        return triangle;
    }

    public static String getSmallTriangle() {
        String triangle="";
        for(int i=1; i<=4; i++) {
            for(int z=1; z<=i; z++){
                triangle += "*";

            }
            triangle+="\n";

        }

        return triangle;
    }

    public static String getLargeTriangle() {
        String triangle="";
        for(int i=1; i<=9; i++) {
            for(int z=1; z<=i; z++){
                triangle += "*";

            }
            triangle+="\n";

        }

        return triangle;
    }
}