Pattern Matching in Scheme
- by kunjaan
How do I accept the following input?
(list of 0 or more charcters and ends with 3) or
(list of 1 or more characters 4 and 0 or more characters after 4)
something like
(match ( list 3)) -> #t
(match ( list 1 2 3)) -> #t
(match (list 1 2 3 4)) -> #t
(match (list 1 2 3 4 5)) -> #t
(match (list 4)) -> #f
EDIT: THIS IS NOT MY HOMEWORK. I trying to write something like ELIZA from PAIP but I know only how to write a pattern that begins with a word.
