In this kata you are required to, given a string, replace every letter with its position in the alphabet. If anything in the text isn't a letter, ignore it and don't return it. "a" = 1, "b" = 2, etc.

replace_with_alphabet_position.rb

def alphabet_position(text)
    text.upcase.gsub(/[A-Z]/).map {|m| m.ord-64}.join(" ") 
end

#### before refactor 

# def alphabet_position(text)
#   alphabet = ('a'..'z').to_a
#   text.downcase.chars.map {|l| alphabet.index(l.next) }.compact.join(" ")
# end