?
package com.javarush.task.task18.task1809;
import java.io.*;
import java.util.*;
/*
Реверс файла
*/
public class Solution {
public static void main(String[] args) throws IOException {
Scanner scan = new Scanner(System.in);
FileInputStream fis = new FileInputStream(scan.nextLine());
FileOutputStream fos = new FileOutputStream(scan.nextLine());
byte[] arr = new byte [fis.available()];
while (fis.available() > 0){
fis.read(arr);
}
for (int i = arr.length-1; i > 0; i--){
fos.write(arr[i]);
}
fis.close();
fos.close();
}
}