Ruby solution for pig latin demonstrating iteratation and regular expressions.

pig_latin.rb

def regex_solution(word)
  match = word.match(/[aeiou]/)
  return word unless match
  pre = match.pre_match
  post = match.post_match
  return match.to_s + post + pre + "ay"
end

def regex_grouping_solution(word)
  result = word.split(" ").map do |input_word|
    input_word.gsub!(/^([^aeiou]*)(.*)/,'\2\1')
  end
  result[0] == word ? word : result[0] + "ay"
end

def iterative_solution(word)
  word_array = word.split("")
  vowels = ["a","e","i","o","u"]
  result = []
  word_array.each_with_index do |letter, index|
    if vowels.include? letter
      result = word_array[index..-1] + word_array[0..index-1] + ["ay"]
      return result.join("")
    end
  end
  return word
end

def convert_word_to_pig_latin(word)
  return regex_solution(word)
  # return regex_grouping_solution(word)
  # return iterative_solution(word)
end

# p convert_word_to_pig_latin("banana")
p convert_word_to_pig_latin("banana") == "ananabay"

# p convert_word_to_pig_latin("strotch")
p convert_word_to_pig_latin("strotch") == "otchstray"

p convert_word_to_pig_latin("klck")
p convert_word_to_pig_latin("klck") == "klck"