Regular expressions
(Regexes, for short) are patterns used to match character combinations in
strings. grep is a CLI tool for
searching using Regexes.
In this challenge you'll build your own implementation of grep. Along the way
we'll learn about Regex syntax, how parsers/lexers work, and how regular
expressions are evaluated.
Note: If you're viewing this repo on GitHub, head over to codecrafters.io to try the challenge.