about_scoring_project.rb

require File.expand_path(File.dirname(__FILE__) + '/neo')

# Greed is a dice game where you roll up to five dice to accumulate
# points.  The following "score" function will be used to calculate the
# score of a single roll of the dice.
#
# A greed roll is scored as follows:
#
# * A set of three ones is 1000 points
#
# * A set of three numbers (other than ones) is worth 100 times the
#   number. (e.g. three fives is 500 points).
#
# * A one (that is not part of a set of three) is worth 100 points.
#
# * A five (that is not part of a set of three) is worth 50 points.
#
# * Everything else is worth 0 points.
#
#
# Examples:
#
# score([1,1,1,5,1]) => 1150 points
# score([2,3,4,6,2]) => 0 points
# score([3,4,5,3,3]) => 350 points
# score([1,5,1,2,4]) => 250 points
#
# More scoring examples are given in the tests below:
#
# Your goal is to write the score method.

def score(dice)

  #asegurando que tirada tenga algun valor 

  if dice.length == 0
    return 0
  end

  one = 0
  two = 0
  three = 0
  four = 0
  five = 0
  six = 0
  result = 0

  #mirando las tiradas

  dice.each do |value|
    if value == 1
      one += 1
    end
    if value == 2
      two += 1
    end
    if value == 3
      three += 1
    end
    if value == 4
      four += 1
    end
    if value == 5
      five += 1
    end
    if value == 6
      six += 1
    end
  end

  #generando resultado

  if one == 1
    result += 100
  end
  if one == 2
    result += 200
  end
  if one == 3
    result += 1000
  end
  if one == 4
    result += 1100
  end
  if one == 5
    result += 1200
  end

  if two == 3
    result += 200
  end

  if three == 3
    result += 300
  end

  if four == 3
    result += 400
  end

  if five == 1
    result += 50
  end
  if five == 2
    result += 100
  end
  if five == 3
    result += 500
  end
  if five == 4
    result += 550
  end
  if five == 5
    result += 600
  end

  if six == 3
    result += 600
  end
  # respuesta

  result
end

class AboutScoringProject < Neo::Koan
  def test_score_of_an_empty_list_is_zero
    assert_equal 0, score([])
  end

  def test_score_of_a_single_roll_of_5_is_50
    assert_equal 50, score([5])
  end

  def test_score_of_a_single_roll_of_1_is_100
    assert_equal 100, score([1])
  end

  def test_score_of_multiple_1s_and_5s_is_the_sum_of_individual_scores
    assert_equal 300, score([1,5,5,1])
  end

  def test_score_of_single_2s_3s_4s_and_6s_are_zero
    assert_equal 0, score([2,3,4,6])
  end

  def test_score_of_a_triple_1_is_1000
    assert_equal 1000, score([1,1,1])
  end

  def test_score_of_other_triples_is_100x
    assert_equal 200, score([2,2,2])
    assert_equal 300, score([3,3,3])
    assert_equal 400, score([4,4,4])
    assert_equal 500, score([5,5,5])
    assert_equal 600, score([6,6,6])
  end

  def test_score_of_mixed_is_sum
    assert_equal 250, score([2,5,2,2,3])
    assert_equal 550, score([5,5,5,5])
    assert_equal 1100, score([1,1,1,1])
    assert_equal 1200, score([1,1,1,1,1])
    assert_equal 1150, score([1,1,1,5,1])
  end

end