import java.util.Scanner;//题目：一球从100米高度自由落下，每次落地后反跳回原高度的一半；再落下，求它在第10次落地时，共经过多少米？第10次反弹多高？public class BallTest {    public static void main(String[] args) {        double firsthight;        int n;        Scanner in = new Scanner (System.in);//从键盘读取两个数据        System.out.println("请输入从多少米落下：");        firsthight = in.nextDouble();        System.out.println("请输入第几次落下：");        n = in.nextInt();    System.out.println("从"+firsthight+"m"+"第"+n+"次落地经过的距离"+countTotalLong(n,firsthight)+"m");    System.out.println("从"+firsthight+"m"+"第"+n+"次反弹高度"+countHeight(n,firsthight)+"m");    }    public static double countTotalLong(int n,double firsthight){
   //计算总的路径        double totalLong =firsthight;        for(int i = 0;i