C :

#include <stdio.h>
void main()
{
	int n;
	scanf("%d",&n);
	int i,a[n],sum=0,j;
	for(i=0;i<n;i++){
		scanf("%d",&a[i]);
		sum+=a[i];
	}
	float avg=(float)sum/n;
	for(i = 0;i < n - 1;i++){
  		int t = i;
		for(j = i + 1;j < n;j++){
			if(a[j] > a[t])
				t = j;
		}
		if(t != i){
			int temp = a[i];
			a[i] = a[t];
			a[t] = temp;
		} 		
	}
	printf("%d\n%.2f\n",sum,avg);
	for(i=0;i<n;i++){
		printf("%d ",a[i]);
	}
}

C++ :

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main(){
	double n,t,s=0;
	int i,j,c=0,a[20000];
	cin>>n;
	for(i=0;i<n;i++){
		cin>>a[i];
		s+=a[i];
		c++;
	}
	cout<<s<<endl<<fixed<<setprecision(2)<<s/c<<endl;
	for(i=1;i<=n-1;i++){
		for(j=0;j<n-i;j++){
			if(a[j]<a[j+1]){
				t=a[j];
				a[j]=a[j+1];
				a[j+1]=t;
			}
		}
	}
	for(i=0;i<n;i++){
		cout<<a[i]<<" ";
	}
}

Pascal :

var a:array[1..10000] of longint;
    i,j,s,n,t:longint;
    x:real;
begin
read(n);
for i:=1 to n do
begin
read(a[i]);
s:=s+a[i];
end;
writeln(s);
x:=s/n;
writeln(x:0:2);
for i:=1 to n do
for j:=i+1 to n do
if a[j]>a[i] then begin t:=a[i];a[i]:=a[j];a[j]:=t;end;
for i:=1 to n do
write(a[i],' ');
end.

Java :

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
public class Main{
	public static void main(String[] args) {
		Scanner scanner=new Scanner(System.in);
		String str=scanner.nextLine();
		String fsstr=scanner.nextLine();
		String[] fsArray=fsstr.split(" ");
		int a=Integer.valueOf(fsArray[0]);
		int b=Integer.valueOf(fsArray[1]);
		int c=Integer.valueOf(fsArray[2]);
		int d=Integer.valueOf(fsArray[3]);
		int e=Integer.valueOf(fsArray[4]);
		List arrList=new ArrayList();
		arrList.add(a);
		arrList.add(b);
		arrList.add(c);
		arrList.add(d);
		arrList.add(e);
		Collections.sort(arrList);
		String res="";
		for(int i=arrList.size()-1;i>=0;i--){
			res=res+" "+(arrList.get(i));
		}
		DecimalFormat df = new DecimalFormat("#.00");
		System.out.println((a+b+c+d+e));
		System.out.println(df.format((float)(a+b+c+d+e)/5));
		System.out.println(res.trim());
	}
}

Python :

# 接收输入n
n = int(input())
# 接收n个整数值转换成字符串列表m
m = input().split()
# 定义空列表l
l = []
# 定义总和su
su = 0
# 平均值
avg = 0
# 循环遍历字符串列表,把每个值转换成整型列表
for v in m:
    l.append(int(v))
#计算总和
for i in range(0, n):
    su += l[i]
#从大到小排序
l.sort(reverse=True)
#计算平均值
avg = su / n
#输出总和
print(su)
#输出平均值,保留两位小数
print('%.2f' % avg)
#从大到小遍历输出
for i in range(0, n):
    print(l[i],end=' ')