package com.company;

import java.io.*;

public class Main {
    public static void main(String[] args) {
        try (FileInputStream x = new FileInputStream("1.txt")) {
            byte[] buf = new byte[x.available()];
            String s = "", b = "";
            x.read(buf, 0, x.available());
            for (int i = 0; i < buf.length; i++) {
                s += (char)buf[i];
            }
            s += " ";
            System.out.println("Первоначальная строка: " + s);
            System.out.print("Новая строка: ");
            for (int i = 0; i < s.length() - 1; i++) {
                int k = 1;
                while (i < s.length() - 1 && s.charAt(i) == s.charAt(i+1)) {
                    k += 1;
                    i += 1;
                }
                b += s.charAt(i) + String.valueOf(k);
            }
            System.out.print(b);
            if (x != null) x.close();
        } catch(IOException ex) {
            System.out.println(ex.getMessage());
        }
    }
}