import java.util.Scanner;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Ansewer25
{
    public static void main(String[] args)
    {
        StringBuffer sbf=new StringBuffer();
        int[] scores=new int[5];
        inputScore(scores);        
        int[] temp=viewScore(storeScores(scores));
        Arrays.sort(temp);
        for(int i=temp.length-1;i>=0;i--)
        {
            sbf.append(String.valueOf(temp[i])).append(" ");    
        }
        System.out.println("输入的成绩从高到低的排列为:"+sbf.toString());

        System.out.println("平均每科平均成绩为:"+avgScore(scores));        
    }
        
    public static void inputScore(int[] scores)
    {
        
        System.out.println("请输入5个学生的成绩:(0-100的整数)");                
        for(int i=0;i<5;i++)
        {
            Scanner sc=null;
            sc=new Scanner(System.in);
            if(sc.hasNextInt())
            {
                int n=sc.nextInt();
                if(n>=0&&n<=100)
                {
                    scores[i]=n;;
                }
                else
                {
                    System.out.println("输入不合法，请重新输入！");
                    i--;
                }                
                if(i<scores.length-1)
                {
                    System.out.println("请输入下一个学生的成绩!");
                }
            }
            else
            {
                System.out.println("输入不合法，请重新输入！");
                i--;
            }
        }                
    }
    public static File storeScores(int[] scores)
    {
        PrintStream ps=null;
        File file=new File("d:"+File.separator+"data.txt");
        FileOutputStream foutput=null;        
        try
        {
            foutput=new FileOutputStream(file);
            ps=new PrintStream(foutput);
            for(int i:scores)
            {
                ps.println(i);
            }            
        }catch(Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                ps.close();
                foutput.close();                
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
        }
        return     file;
    }
    
    public static int[] viewScore(File file)
    {
        BufferedReader br=null;
        int[] tempInt=new int[5];
        FileInputStream finput=null;
        String temp=null;
        int n=0;
        if(file.exists())
        {
            try
            {
                finput=new FileInputStream(file);
                br=new BufferedReader(new InputStreamReader(finput));
                while((temp=br.readLine())!=null)
                {
                    tempInt[n++]=Integer.parseInt(temp);
                }
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }    
            finally
            {
                try
                {
                    br.close();
                    finput.close();                    
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            }    
        }
        else
        {
            System.out.println("文件不存在!");
        }
    return  tempInt;
    }
        
    public static int avgScore(int[] temp)
    {
        int total=0;
        for(int i:temp)
        {
            total+=i;
        }
        return total/temp.length;
    }
}