import java.util.Scanner;
public class CollectionTree 
{
	
	private Scanner input = null;
	
	private Tree tree = new Tree(); 
	
   /**
    * Start the execution of the solution
    * @param args Command line arguments
    */
   public static void main(String args[])
   {
      CollectionTree collectionTree = new CollectionTree();
      collectionTree.run();
   }
   
   /**
    * Run the solution. This method is called from main()
    */
   public void run()
   {
	   int userEntry = -1;
	   this.input = new Scanner(System.in);
	   while (userEntry != 0)
	   {
		   System.out.println("Welcome to the Collection Tree");
		   System.out.println("To reset the tree, press 1");
		   System.out.println("To add an element into the tree, press 2");
		   System.out.println("To get the level of the lowest leaf, press 3");
		   System.out.println("To exit, press 0");
		   
		   userEntry = input.nextInt();
		   
		   if (userEntry == 1)
		   {
			   tree.reset();
		   }
		   else if (userEntry == 2)
		   {
			   tree.addNode(input);
		   }
		   else if (userEntry == 3)
		   {
			   tree.showTopLeaf();
		   }
		   else if (userEntry != 0)
		   {
			   System.out.println("Invalid digit, please try again");
		   }
	   }
	   this.input.close();
   }
   
}