acronymize and encrypt

acronymize.rb

def acronymize(string)


  # 1. split sentence
  # words = string.split
  # # 2. map over array
  # letters = words.map { |word| word[0].capitalize }
  # # 3. block should take first letter and capitalize
  # return letters.join
  # 4. Join final result

  string.split.map { |word| word[0].capitalize }.join
end

acronymize_spec.rb

require_relative "../acronymize"

describe "#acronymize" do
  it "returns an empty string when passed an empty string" do
    actual = acronymize("")
    expected = ""
    expect(actual).to eq(expected) # passes if `actual == expected`
  end
end


describe "#acronymize" do
  it "returns an empty string when passed an empty string" do
    actual = acronymize("Nobody Wants To Write Nothing")
    expected = "NWTWN"
    expect(actual).to eq(expected) # passes if `actual == expected`
  end
end

describe "#acronymize" do
  it "returns an empty string when passed an empty string" do
    actual = acronymize("check if It STILL captjhdvaw")
    expected = "CIISC"
    expect(actual).to eq(expected) # passes if `actual == expected`
  end
end

encrypt.rb

def encrypt(sentence, permutation_level = -3)
  alphabet = ("A".."Z").to_a
  sentence.split("").map do |letter|
    letter == " " ? " " : alphabet[(alphabet.index(letter) + permutation_level) % 26]
  end.join
end

  # 1. create alphabet
  # 2. split sentence into letters
  # 3. map over letters
  # 4. find index of letter in alphabet
  # 5. subtract 3 from index
  # 6. Use new index to get new letter from alphabet
  # 7. Somewhere along the line deal with the spaces
  # 8. Join letteres back together

encrypt_spec.rb

def encrypt(sentence, permutation_level = -3)
  alphabet = ("A".."Z").to_a
  sentence.split("").map do |letter|
    letter == " " ? " " : alphabet[(alphabet.index(letter) + permutation_level) % 26]
  end.join
end

  # 1. create alphabet
  # 2. split sentence into letters
  # 3. map over letters
  # 4. find index of letter in alphabet
  # 5. subtract 3 from index
  # 6. Use new index to get new letter from alphabet
  # 7. Somewhere along the line deal with the spaces
  # 8. Join letteres back together