Kata to practice object oriented programming.

This is a reduced version of the song, with only 5 verses.

Iteration 1: Regular Song

Create a program that returns the list of verse with a part of The House That Jack Built song.

This is the house that Jack built.

This is the malt that lay in
        the house that Jack built.
         
This is the rat that ate 
        the malt that lay in 
        the house that Jack built.

This is the cat that killed 
        the rat that ate 
        the malt that lay in 
        the house that Jack built.
        
This is the dog that worried 
        the cat that killed 
        the rat that ate 
        the malt that lay in 
        the house that Jack built.

Iteration 2: Reverse House

Create a program that returns the list of verse with a part in reverse order of The House That Jack Built song.

This is the dog that worried.

This is the cat that killed 
        the dog that worried.
        
This is the rat that ate 
        the cat that killed 
        the dog that worried.

This is the malt that lay in 
        the rat that ate 
        the cat that killed 
        the dog that worried.

This is the house that Jack built 
        the malt that lay in 
        the rat that ate 
        the cat that killed 
        the dog that worried.            

Iteration 3: Echo House

Create a program that returns the list of verse with echo of a part of The House That Jack Built song.

This is the house that Jack built 
        the house that Jack built.
        
This is the malt that lay in 
        the malt that lay in 
        the house that Jack built 
        the house that Jack built.
        
This is the rat that ate 
        the rat that ate
        the malt that lay in 
        the malt that lay in 
        the house that Jack built
        the house that Jack built.
        
This is the cat that killed 
        the cat that killed 
        the rat that ate 
        the rat that ate 
        the malt that lay in 
        the malt that lay in 
        the house that Jack built 
        the house that Jack built.

This is the dog that worried 
        the dog that worried 
        the cat that killed 
        the cat that killed 
        the rat that ate 
        the rat that ate 
        the malt that lay in 
        the malt that lay in 
        the house that Jack built 
        the house that Jack built.

Iteration 4: Reverse Echo House

Create a program that returns the list of verse with echo of a part of The House That Jack Built song.

This is the dog that worried 
        the dog that worried.

This is the cat that killed 
        the cat that killed 
        the dog that worried 
        the dog that worried.

This is the rat that ate 
        the rat that ate 
        the cat that killed 
        the cat that killed 
        the dog that worried 
        the dog that worried.
        
This is the malt that lay in 
        the malt that lay in 
        the rat that ate 
        the rat that ate 
        the cat that killed 
        the cat that killed 
        the dog that worried 
        the dog that worried.
            
This is the house that Jack built 
        the house that Jack built 
        the malt that lay in 
        the malt that lay in 
        the rat that ate 
        the rat that ate 
        the cat that killed 
        the cat that killed 
        the dog that worried 
        the dog that worried.

Iteration 5:

Reduce duplicity.

Tip: Composition over inheritance.