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

    public static String getTriangle(int numberOfRows) {
        String rows="";
        for (int x=1; x<= numberOfRows; x++){
            for (int y=1; y<=x; y++) {
                rows+="*";
            }
            rows += "\n";
        }
        return rows;
    }

    public static String getSmallTriangle() {
        String small= "";
        for (int i=1; i<=4; i++){
            for (int j=1; j<=i; j++){
                small+="*";
            }
            small+="\n";

        }
        return small;
    }

    public static String getLargeTriangle() {
        String large= "";
        for (int i=1; i<10; i++){
            for (int j=1; j<=i; j++){
                large+="*";
            }
            large+="\n";
        }
        return large;

    }
}