ordinalize

# File activesupport/lib/active_support/inflector.rb, line 152
  def ordinalize(number)
    if (11..13).include?(number.to_i % 100)
      "#{number}th"
    else
      case number.to_i % 10
        when 1: "#{number}st"
        when 2: "#{number}nd"
        when 3: "#{number}rd"
        else    "#{number}th"
      end
    end
  end