Round Robin Challenge

round_robin.rb

def schedule_tournament(names)
  matches = names.product(names)
  rounds = []

  matches.sort!.each do |sub|
    sub.sort!
    matches.delete(sub) if sub[0] == sub[1]
  end

  matches.uniq!

  until matches.length == 0
    list = names.sort

    until list.length == 0
      round = []
      matches.each do |match|
        if list.length % 2 == 0 && list.include?(match[0]) && list.include?(match[1])
          round << match
          list.delete(match[0])
          list.delete(match[1])
          matches.delete(match)
        elsif list.length % 2 != 0 && list.include?(match[0])
          round << match
          list.delete(match[0])
          matches.delete(match)
        end

        rounds << round
      end
    end

  end

  p rounds.uniq
end
schedule_tournament(['Mrs. Featherbottom', 'Ice the Bounty Hunter', 'Gene Parmesan', 'Buster Bluth'])