This is one of the problems from Ruby Quiz. This command line program will take a word and display a path of words to another word (provided they are of the same length).
For example, running
ruby word_chainer.rb puppy kittywill result in the following output:
puppy
pappy
happy
harpy
harry
parry
party
patty
batty
bitty
kittyThe program takes command line arguments, as can be seen above. If given no arguments, it defaults to puppy and kitty.
This program was written while I was attending App Academy, where I received a lot of guidance on this particular program.