Using Struct to create a class.

person.rb

class Person < Struct.new(:name, :email)
  def info
    "#{self.name} #{self.email}"
  end

  def first_name
    clean_name.first
  end

  def middle_name
    clean_name[1]
  end

  def last_name
    return clean_name.last unless clean_name.length >= 3

    case clean_name.length
      when 3
        "#{clean_name[1]} #{clean_name[2]}"
      when 4
        "#{clean_name[2]} #{clean_name[3]}"
      else
        clean_name.last
    end
  end

  def full_name
    clean_name.join(' ')
  end

  def clean_name
    name_split = self.name.split
    name_split.map { |n| fix_case(n) }
  end

  def fix_case(name_)
    name_.downcase.capitalize
  end
end