/*
  The test harness for the List class, using integers as data
  allowing methods show, add, insert, length, print, delete, reverse
  and lab exercise methods nth and sum
  */


import java.lancs.*;

public class Test
{      
       
 public static void main(String[] args) throws Exception
  {
    List l1 = new List();
    int i;
    String options = "(end, show, length, add, insert, delete, " +
                     "reverse, sum, nth, help)";
    BasicIo.prompt("Type in command:" + options);
    String command = BasicIo.readString();
    
    while (!command.equals("end"))
      {
	if (command.equals("show"))
	  l1.print();
	if (command.equals("length"))
	  System.out.println(l1.length());
	if (command.equals("add")){
	    BasicIo.prompt("data: ");
	    i = BasicIo.readInteger();
	    l1 = l1.add(i);
	    l1.print();
	  }
	if (command.equals("insert")){
	    BasicIo.prompt("data: ");
	    i = BasicIo.readInteger();
	    l1 = l1.insert(i);
	    l1.print();
	  }
	if (command.equals("delete")){
	    BasicIo.prompt("data: ");
	    i = BasicIo.readInteger();
	    l1 = l1.delete(i);
	    l1.print();
	  }
	if (command.equals("reverse")){
	    l1 = l1.reverse();
	    l1.print();
	  }
	if (command.equals("sum"))
	  System.out.println(l1.sum());
	if (command.equals("nth")){
	    BasicIo.prompt("item number: ");
	    i = BasicIo.readInteger();
	    System.out.println(l1.nth(i));
	  }	
	if (command.equals("help"))
	  System.out.println(options);

	BasicIo.prompt("Type in command: ");
	command = BasicIo.readString();
      }
  }
}