//  Scott DeRuiter        7/17/01
//  Pyramid.java
//  Use recursion to deconstruct a String, printing out a pyramid of the letters.
//  7/20/2011 - Greenstein: Changed TextReader to Scanner

import java.util.Scanner;

public class Pyramid          
{ 
	private String chunk;
	private String original;

	public Pyramid ( )   
  	{
		chunk = "";
		original = "";
	}

	public static void main ( String [] args ) 
  	{	
		Pyramid p = new Pyramid ( );
		p.GetPhrase ( );
		p.Deconstruct ( );
	}

	public void GetPhrase ( )   
  	{
		Scanner console = new Scanner ( );
		do    
		{
			System.out.print ( "\n\nEnter a phrase: " );
			chunk = console.nextLine ( );
		} while ( chunk == null );
		if ( chunk.length ( ) % 2 == 0 )
			chunk = chunk + " ";
		original = chunk;
		System.out.println ( "\n\n" );
	}

	public void Deconstruct ( )   
  	{
		Piece ( 0 );
		System.out.println ( "\n\n" );
	}
	
	public String Piece ( int n )   
  	{
		chunk = original.substring ( original.length ( ) / 2 - n, 
				original.length ( ) / 2 + n + 1 );
		System.out.println ( chunk );
		if ( chunk.equals ( original ) )
			return "";
		else
			return Piece ( n + 1 ) ;
	}
}