Ruby 04-Flow-Control Livecode

acronymize.rb

# What is an acronym:
# WTF => what the f*ck
# CIA => central intelligence agency
# FBI => federal bureau of investigation

# Pseudocode:
# 1) we start with a String
# 2) split the sentence into words => Array
    # delete ["of", "the", "a"]
# 3) get the first letter of each word #each/map
# 4) upcase the first letter of each word #upcase
# 5) add upcased initials together #join

FILTERS = ["of", "the", "a"]

def acronymize(sentence)
  # TODO: Build an acronym from the sentence
  words = sentence.split
  FILTERS.each do |filter|
    words.delete(filter)
  end
  # letters = []
  # words.each do |word|
  #   letters << word[0].upcase
  # end

  letters = words.map do |word|
    word[0].upcase
  end
#.          do                     end
#  words.map { |word| word[0].upcase }.join

  letters.join
end

subject = "central intelligence agency"
expected = "CIA"
puts acronymize(subject) == expected

subject = "federal bureau of investigation"
expected = "FBI"
puts acronymize(subject) == expected