Exercise 8.13

package chapter8;

public class Numeric
{
        public static double intPower(double x, int n)
    {
                double answer;

                if(n > 0 && n % 2 != 0)
        {
                        double intermediate;
                        intermediate = Math.pow(x, n-1);
                        answer = intermediate * x;
                }

                if(n < 0){
                        answer = 1 / (Math.pow(x, n));
                }

                if(n > 0 && n % 2 == 0)
        {
                        double mediator;
                        mediator = Math.pow(x, n / 2);
                        answer = Math.pow(mediator, 2);
                }
                return answer;
        }
}