import java.io.*;
import java.util.*;
public class test1_7 {
//Scanner+FileOutputStream+FileInputStream
public static void main(String args[]) throws IOException
{
int cur_Grade;
Scanner sc = new Scanner(System.in);
try
{
OutputStream fos = new FileOutputStream(new File("data.txt"));
for(int i=0;i<5;i++)
{
cur_Grade = sc.nextInt();
fos.write(cur_Grade);
}
fos.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
sc.close();
int[] Grades = new int[10];
int i =0;
double sum = 0;
int readnum;
InputStream fis = new FileInputStream(new File("data.txt"));
while((readnum = fis.read())!=-1)
{
Grades[i++] = readnum;
}
fis.close();
Arrays.sort(Grades,0,5);
for(i=0;i<5;i++)
{
sum += Grades[i];
System.out.print(Grades[i]+"　");
}
System.out.println("\n平均数为："+sum/5);
}
}

import java.io.*;
import java.util.*;
public class test1_7 {
//DataOutputStream+BufferedReader
public static void main(String args[]){
try{
DataInputStream d_is = new DataInputStream(System.in);
FileOutputStream f_os = new FileOutputStream("data.txt");
DataOutputStream d_os = new DataOutputStream(f_os);
for(int i=0 ; i<5 ; i++){
int n = d_is.readInt();
d_os.writeInt(n);
}
int n = 5;
double score[] = new double[5];
String line;
FileReader fr = new FileReader("data.txt");
BufferedReader i_br = new BufferedReader(fr);
int row = 0;
while((line = i_br.readLine())!=null){
score[row++] = Double.parseDouble(line);
}
i_br.close();
fr.close();
Arrays.sort(score);
for(int i=0 ; i

import java.io.*;
import java.util.*;
public class test1_7 {
//BufferedReader+BufferedWriter
public static void main(String args[]){
try{
int n = 5;
double score[] = new double[5];
String line;
InputStreamReader i_sr = new InputStreamReader(System.in);
BufferedReader br = new BufferedReader(i_sr);
//BufferedWrtier不要写错了，这里是没有File的！
FileWriter fw = new FileWriter("file1.txt");
BufferedWriter b_fw = new BufferedWriter(fw);
System.out.println("请输入学生成绩:");
for(int i=0 ; i

PrintStream+BufferedReader

import java.io.*;
import java.util.*;
public class test1_7 {
//PrintStream+BufferedReader
public static void main(String args[]){
try{
Scanner scan = new Scanner(System.in);
File file = new File("file2.txt");
FileOutputStream f_os = new FileOutputStream(file);
PrintStream ps = new PrintStream(f_os);
int ch;
for( int i=0 ; i<5 ; i++ ){
ch = scan.nextInt();
ps.println(ch + "");
}
ps.close();
int n = 5;
double score[] = new double[5];
String line;
FileReader fr = new FileReader("file2.txt");
BufferedReader i_br = new BufferedReader(fr);
int row = 0;
while((line = i_br.readLine())!=null){
score[row++] = Double.parseDouble(line);
}
i_br.close();
fr.close();
Arrays.sort(score);
for(int i=0 ; i