puts "Please type in the strings!"

  array = []
  word = gets.chomp
  while word != '' do
    array.push word.downcase
    word = gets.chomp
  end

  sa = array.clone
  sa.each_index do |i|
    j = i
      while j>0 && sa[j] < sa[j-1]
        sa[j],sa[j-1] = sa[j-1], sa[j]
    end
  end