Driver.java

import java.io.*;
import java.util.*;

public class Driver {
    public static void main(String[] args) {
	Encoder e = new Encoder(); 
	System.out.println(e.encode("hello", 3));
	System.out.println(e.encode("abcxyz", 3));
	System.out.println(e.encode("I like my cats.", 13));

	

	
    }
}