Input: List of meetings

Output: Can conference room fit all the meetings

class Meeting
  attr_accessor :start_time
  attr_accessor :end_time

  def does_not_overlap?(start_time, end_time)
    self.start_time < start_time && self.end_time < end_time ||
    self.start_time > start_time && self.end_time > end_time ||
  end
end

class ConferenceRoom
  attr_accessor :meetings

  def initialize
    self.meetings = []
  end

  def bulk_schedule(list_of_meetings)
    currently_scheduled_meetings = self.meetings
    list_of_meetings.each do |meeting|
      self.meetings.each do |scheduled_meeting|
        if currently_scheduled_meetings.does_not_overlap?(meeting)
          schedule(meeting)
        else
          raise "Conference room can't fit all meetings"
        end
      end
    end
  end

  def schedule(meeting)
    self.meetings << meeting
  end
end