public class Test {

  public static int bouncingBall(double h, double bounce, double window) {
           if (window > h || h < 0 || bounce >= 1 || bounce < 0) // note >=
           return -1;
         int viewCount=1; // initial fall
         double height =h*bounce; // height of bounce
         while (height>window)
         {
           height=height*bounce;
           viewCount+=2; // going up and down
         }
         return viewCount;

        }

  public static void main(String[] args) {

    System.out.println( bouncingBall(3, 0.66, 1.5)); //3
     System.out.println( bouncingBall(3, 1, 1.5)); //-1
  }
}