// Complete the class you started in the draft for this problem. 
// Here are the instuctions again:

// Write a class InchWorm that models an inch worm moving along a 
// horizontal line.
// The inch worm  moves either to the right or left. Initially, the 
// inch worm moves to the right, 
// but it can turn to change its direction. In each move, its position 
// changes by one unit in the current direction. 

// Provide two constructors. 
// One that takes the initial position as an argument 
// and one with no arguments that sets the initial position to 0. 

// You will need two instance variables. 
// One to keep track of the position and one to keep track of the direction. 
// You can use 1 to represent moving right and -1 to represent moving left. 

// Constructors:
// public InchWorm()
// public InchWorm (int initialPosition)

// Provide these methods:
// public void turn()
// public void move()
// public int getPosition()

// Sample usage:
// InchWorm worm = new InchWorm (10);
// worm.move(); // Now the position is 11
// worm.turn();
// worm.move(); // Now the position is 10


// Need help starting this question? In the lesson titled 
// "Starting points: Problem Set Questions", go to the
// problem titled "Problem Set 2 - Question 2" for some tips on 
// how to begin. 

public class InchWorm
{
   // TODO: Add instance variables
    private int position;
    private int direction;

   public InchWorm()
   {
      // TODO: Complete constructor
       this.position = 0;
       this.direction = 1;
   }

   public InchWorm (int initialPosition)
   {
       // TODO: set the instance variable to the constructor parameter
       this.position = initialPosition;
       this.direction = 1;
   }

   public void move()
   {
        // TODO: Update the position of the inch worm   
       this.position = position + direction; 
   }

   public void turn()
   {
      // TODO: Update the direction
       this.direction = direction * -1;
   }

   public int getPosition()
   {
      return position;
   }

   public int getDirection()
   {
      return direction;
   }
}