题解 | #小球走过路程计算#
小球走过路程计算
https://www.nowcoder.com/practice/ddbb7021c0a7452f9044564234616913
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner=new Scanner(System.in); float h=scanner.nextFloat(); int n =scanner.nextInt(); //write your code here...... // 1 次落地 100 反弹 50 // 2 次落地 100 + (50 + 50) 反弹 25 // 3 次落地 100 + (50 + 50) + (25 + 25) 反弹 12.5 float sum = 0 ; for(int i = 1 ; i<= n ;i ++){ sum = sum + h ; if(i > 1){ sum = sum + h ; } h = h / 2; } System.out.println(String.format("%.3f", h)+" "+String.format("%.3f", sum)); } }