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？

 

import java.util.Scanner;public class testOne {    /**     * @param args     */    private double totalHeight=100;    private double curHeight=50;    //下落    public void drop(int times){        if((times-1)==0){            return ;        }        setTotalHeight(getTotalHeight()+2*getCurHeight());        setCurHeight(getCurHeight()/2);        drop(times-1);    }    private void setCurHeight(double CurHeight) {
            curHeight=CurHeight;    }    public void setTotalHeight(double TotalHeight) {
            totalHeight=TotalHeight;    }    public double getCurHeight() {
            return curHeight;    }    public double getTotalHeight() {
            return totalHeight;    }    public static void main(String[] args) {
            System.out.println("请输入次数：");        Scanner sc=new Scanner(System.in);        int i=sc.nextInt();                testOne main=new testOne();        main.drop(i);        System.out.println("总高度是"+main.getTotalHeight());        System.out.println("最后一次反弹高度是"+main.getCurHeight());            }}