package recursion;

public class Triangle 
{
    /* []
       [][]
       [][][]
       [][][][]
    */
    // triangle above has width = 4
    private int width;
    public Triangle(int aWidth)
    {   width = aWidth; 
    }
    public int getArea()
    {   // base case
        if (width == 1) return 1;
        Triangle smallerTriangle = new Triangle(width-1);
        int smallerArea = smallerTriangle.getArea();
        return width + smallerArea;
    }
    public static void main(String[] args)
    {   Triangle tri = new Triangle(100);
        int area = tri.getArea();
        System.out.println("area: " + area);
    }
}