reverse.rb

def reversal!(text)
  textVowels = getVowels(text)

  textReversal = ""
  vowelPosition = 0
  for j in 0..text.size - 1 do  
    if isVowel(text[j])
      vowelPosition += 1
      if vowelPosition == textVowels.size
        textReversal << textVowels[0]
      else
        textReversal << textVowels[vowelPosition]
      end
    else
      textReversal << text[j]
    end
  end

  puts textReversal
end

def getVowels(text)
  textVowels = ""
  for i in 0..text.size - 1 do
    textVowels << text[i] if isVowel(text[i])
  end
  textVowels
end

def isVowel(char)
  vowes = ["a", "e", "i", "o", "u"]
  vowes.include?(char)
end

reversal!("apple")