gistfile1.rb

def score(dice, total=0)

  # * A set of three ones is 1000 points
  if dice.select {|d| d == 1}.length >= 3
    3.times {|i| dice.delete_at(dice.index(1)) }
    return score dice, 1000
  end
  
  # * A set of three numbers (other than ones) is worth 100 times the
  #   number. (e.g. three fives is 500 points).
  (1..6).each do |i|
    if dice.select {|d| d == i}.length >= 3
      total += i * 100
    end
  end
  
  # * A five (that is not part of a set of three) is worth 50 points.
  total += 50 * dice.select{|d| d == 5}.length
  
  # * A one (that is not part of a set of three) is worth 100 points.
  total += 100 * dice.select{|d| d == 1}.length
  
  total
end