Turtle moving algorithm

gistfile1.java

public class Solution {

    /*
    * Initialisation of sum
    * Initialization of parametres of field
     */
        public static double sum=1;
        public static double heigth = 3;
        public static double length = 3;
    //----------------------------------------------------------
        public static void main(String[]args) {
            //checking up
            if(heigth == length) {
                sum*=2;
                for(int i=(int)heigth-1;i>2;i--) {
                    sum*=(length-1)/(i-1)+1;
                }
               sum*=length;
            }
            else {
                if(heigth==2) {
                    sum=length;
                }
                else {
                    sum*=(length-1)/(heigth-1)+1;
                    for (int i=(int)heigth-1;i>2;i--) {
                        sum*=(length-1)/(i-1)+1;
                    }
                    sum*=length;
                }
            }

            //printing
            System.out.println(sum);

        }

}