2020-12-20

import java.util.Scanner;
public class Prog10{
  public static void main(String[] args){
    System.out.print("请输入小球落地时的高度和求解的次数：");
    Scanner scan = new Scanner(System.in).useDelimiter("\\s");
    int h = scan.nextInt();
    int n = scan.nextInt();
    scan.close();
    distance(h,n);
  }
  //小球从h高度落下，经n次反弹后经过的距离和反弹的高度
  private static void distance(int h,int n){
    double length = 0;
    for(int i=0;i<n;i++){
      length += h;
      h /=2.0 ;
    }
    System.out.println("经过第"+n+"次反弹后，小球共经过"+length+"米，"+"第"+n+"次反弹高度为"+h+"米");
  }
}