import java.io.*;

class UseLists1
{

 public static void main(String [] args) throws IOException
 {
  BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
  List list1,list2;
  int n;
  for(;;) try
     {
      System.out.print("Enter list of characters 1 : ");
      list1=ListRead.readCharList(in);
      break;
     }
  catch(CharListFormatException e)
     {
      System.out.println("Not a valid list of characters");
     }
  for(;;) try
     {
      System.out.print("Enter list of characters 2: ");
      list2=ListRead.readCharList(in);
      break;
     }
  catch(CharListFormatException e)
     {
      System.out.println("Not a valid list of characters");
     }
  System.out.print("\nList 1 is: "+list1);
  System.out.print("\nList 2 is: "+list2);
  System.out.print("\n\nAppending list 1 to list 2 is: ");
  System.out.println(ListOps.append(list1,list2));
  System.out.print("\nMerging list 1 with list 2 is: ");
  System.out.println(ListOps.merge(list1,list2));
  System.out.println();

  for(;;) try
     {
      System.out.print("Enter an integer: ");
      n=Integer.parseInt(in.readLine());
      break;
     }
  catch(NumberFormatException e)
     {
      System.out.println("Not a valid number");
     }
  System.out.print("The first "+n+" elements of list 1 are: ");
  System.out.println(ListOps.take(n,list1));
  System.out.print("\nList 2 less its first "+n+" elements is: ");
  System.out.println(ListOps.drop(n,list2));
  System.out.println();
 }

}