Morse Code Generator

morse_code.rb

# Generates morse code based on input. Splits string and uses a morse code hash to convert letters.
# morse_encode("q").should == "--.-"
# morse_encode("cat").should == "-.-. .- -"
# morse_encode("CAT in hat").should == "-.-. .- -  .. -.  .... .- -"

def morse_encode(str)
  string_split = str.downcase.split(' ')
  coded_words = string_split.map {|wrd| morse_encode_word(wrd)}
  coded_words.join('  ')
end

def morse_encode_word(word)
  word_split = word.split('')
  coded_letters = word_split.map {|let| morse_encode_letter(let)}
  coded_letters.join(' ')
end

def morse_encode_letter(letter)
  m_code = {
    "a" => ".-", "b" => "-...", "c" => "-.-.", "d" => "-..",
    "e" => ".", "f" => "..-.", "g" => "--.", "h" => "....",
    "i" => "..", "j" => ".---", "k" => "-.-", "l" => ".-..",
    "m" => "--", "n" => "-.", "o" => "---", "p" => ".--.", 
    "q" => "--.-", "r" => ".-.", "s" => "...", "t" => "-", 
    "u" => "..-", "v" => "...-", "w" => ".--", "x" => "-..-", 
    "y" => "-.--", "z" => "--.." }
m_code[letter]
end