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n次落地时，共经过多少米？第n次反弹多高？
数据范围： 
[编程题]小球自由落体
import java.util.Scanner;
public class Main{
public static void main(String[] src){
float high = 100.0f;
float sum = 0.0f;
Scanner scan = new Scanner(System.in);
if(scan.hasNextInt()){
int time = scan.nextInt();
sum = 100;
high = 50;
for(int i = 1; i < time; i++){
sum += (high * 2);
high = high / 2;
}
System.out.println(sum + " " + high);
}
}
}
发表于 2020-03-12 14:19:58
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n = int(input()) d = 100 * (3 - 0.5 ** (n - 2)) h = 100 * 0.5 ** n print(d, h)
发表于 2020-08-01 20:04:38
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JavaScript(Node) 😎题目:4399👾-物理题小球自由落体
const readline = require('readline')
const rl = readline.createInterface({
input: process.stdin,
ouput: process.stdout
})
let inArr = []
rl.on('line', line=>{
if(!line) return
inArr.push(line.trim())
if(inArr.length === 1){
let n = +inArr[0]
let h =100
let f =200
let sum = 100
for(let i =1;i<n;i++){
sum += f/2
f = f/2
}
for(let i =0;i<n;i++){
h = h/2
}
console.log(sum.toFixed(6))
console.log(h.toFixed(6))
}
})
发表于 2020-03-09 15:17:16
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#include <iostream>
using namespace std;
int main(){
int n;
while(cin>>n){
float ans1=100, ans2=0, h=100;
for(int i=1; i<=n; i++){
ans1 = ans1 + ans2*2;
ans2 = h/2;
h /= 2;
}
cout.setf(ios::fixed);
cout.precision(6);
cout.setf(ios::right);
cout << ans1 << " " << ans2;
}
return 0;
}
发表于 2020-03-02 14:10:04
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import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
// 注意 hasNext 和 hasNextLine 的区别
int a = in.nextInt();
float ansSum = 100f;
float ansHeight = 50f;
for(int i = 1; i < a; i++){
ansSum += ansHeight * 2f;
ansHeight = ansHeight / 2f;
}
System.out.printf("%.6f %.6f",ansSum,ansHeight);
}
}
发表于 2024-03-09 04:42:27
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)
func main(){
fmt.Println("请输入一个数")
var n int
fmt.Scanf("%v",&n)
Conclute(n)
}
func Conclute(n int ){
var ans1,ans2 float32
ans1,ans2 = 100,50
if n == 1{
fmt.Println(ans1,ans2)
return
}else{
for i := 1;i<n;i++{
ans1 += 2*ans2
ans2 = ans2/2
}
}
fmt.Printf("%v %v",ans1,ans2)
}
// Golang，精度有问题ans2老是多两位不太会调等我研究下
发表于 2022-09-07 16:49:42
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#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
int n;
cin >> n;
double sum = 100;
double len = 50;
for(int i = n; i > 1; i--)
{
sum += len*2;
len = len/2;
}
cout << fixed << setprecision(6) << sum << " " << len << endl;
return 0;
} 这个精度emmm我也是醉啦
发表于 2022-08-18 15:13:18
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import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
float height = 100.0f;
float sum = 0.0f;
for (int i = 0; i < n; i++) {
sum += 2 * height;
height = height / 2;
}
System.out.printf("%.6f %.6f", sum - 100, height);
}
}
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
float height = 100.0f;
float sum = 0.0f;
for (int i = 0; i < n; i++) {
sum += 2 * height;
height = height / 2;
}
System.out.printf("%.6f %.6f", sum - 100, height);
}
}
发表于 2022-08-17 23:24:58
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using System;
class A
{
static void Main()
{
int n = int.Parse(Console.ReadLine());
double height = 100.0;
double ans1 = 0.0;
double ans2 = height;
for(int i = 0;i<n;i++)
{
ans1 += ans2;
ans2 = ans2/2.0;
if(i != n-1)
{
ans1 +=ans2;
}
}
Console.WriteLine($"{ans1} {ans2}");
}
} float精度不够
发表于 2022-05-26 14:40:25
回复(0)
var a=readline();
var val=0.5;
var data=[];
var sum=0;
var count=0;
if(a-1>0 && a!=2){
for(var i=1;i < a-1;i++){
val=val*0.5;
var z=100*val;
data.push(z);
};
for(var j=0;j<data.length;j++){
sum+=data[j];
};
count=sum*2+100+100;
}else if(a==2){
z=100*0.5;
count=z*2+100;
}else{
z=100;
count=100;
};
print(count,z*0.5);
发表于 2021-03-13 15:00:29
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import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
double[] ans=test(n);
System.out.println(ans[0]+" "+ans[1]);
}
public static double [] test(int n){
double ans[]=new double[2];
ans[0]=100;
double temp=100;
int i=n;
while (n>=1&&n<=10){
if (i!=n){
ans[0]+=(temp*2);
}
temp/=2;
ans[1]=temp;
n--;
}
return ans;
}
}
public class Main {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
double[] ans=test(n);
System.out.println(ans[0]+" "+ans[1]);
}
public static double [] test(int n){
double ans[]=new double[2];
ans[0]=100;
double temp=100;
int i=n;
while (n>=1&&n<=10){
if (i!=n){
ans[0]+=(temp*2);
}
temp/=2;
ans[1]=temp;
n--;
}
return ans;
}
}
发表于 2020-10-23 00:12:58
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#include<stdio.h>
float alldistance(int m,int q);
int main ()
{
int n=0;
float x=0,y=0;
scanf("%d",&n);
x=alldistance(n,0);
y=alldistance(n,1);
printf("%f %f",x,y);
}
float alldistance(int m,int q)
{
float a=0,c=0;
for(int i=1;i<m+1;i++)
{
if(i==1)
{
c=((float)25)/(0.5);
a=100;
}
else
{
c=c/2;
a=a+c*2*2;
}
}
if(q==0)
{
return(a);
}
if(q==1)
{
return(c);
}
}
float alldistance(int m,int q);
int main ()
{
int n=0;
float x=0,y=0;
scanf("%d",&n);
x=alldistance(n,0);
y=alldistance(n,1);
printf("%f %f",x,y);
}
float alldistance(int m,int q)
{
float a=0,c=0;
for(int i=1;i<m+1;i++)
{
if(i==1)
{
c=((float)25)/(0.5);
a=100;
}
else
{
c=c/2;
a=a+c*2*2;
}
}
if(q==0)
{
return(a);
}
if(q==1)
{
return(c);
}
}
发表于 2020-10-13 21:47:05
回复(0)
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
int a = s.nextInt();
float sum=0;
float total=0;
float high=100;
for(int j=1;j<=a;j++) {
if (j == 1) {
total = total + high;
high = high / 2;
} else {
total = total + 2*high;
high = high / 2;
sum = sum + total;
}
}
java.text.DecimalFormat df = new java.text.DecimalFormat(".000000");
System.out.println(df.format(total));
// System.out.println("sum"+sum);
System.out.println(df.format(high));
}
}
发表于 2020-09-12 13:42:56
回复(0)
搞不懂为啥我会错，输入写死了试过是错的，输入自己输入还是错？为啥呢？
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
//输入
int n;
for(;;) {
Scanner input = new Scanner(System.in);
n = input.nextInt();
float h =100;
float ans1=100;
float ans2=0;
for(int i=0;i<n;i++){
h =h / 2;
ans1 = ans1+2 * h;
}
ans2 = h;
ans1 = ans1 - 2*h;
System.out.printf("%.6f,%.6f",ans1,ans2);
}
}
}
发表于 2020-08-18 10:28:17
回复(0)
#include <iostream>
(720)#include <iomanip>
using namespace std;
int main(){
int n=0;
double ans1=0.0,ans2=0.0;
cin>>n;
double height=100.0;
for(int i=0;i<n;i++){
ans1+=height*2;
height/=2;
ans2=height;
}
cout<<setiosflags(ios::fixed)<<setprecision(6)<<ans1-100<<" "<<ans2;
system("pause");
return 0;
}
发表于 2020-03-12 10:18:50
回复(0)
问题信息
通过挑战的用户
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2023-03-09 19:55:51 -
2023-03-07 23:01:33
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2023-02-27 20:41:35
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2023-02-26 19:40:05
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2022-11-29 09:50:37
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