Added src directory

src/about_scoring_project.rb

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+require 'edgecase'
+
+# Greed is a dice game where you roll up to five dice to accumulate
+# points.  The following "score" function will be used 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 scoing examples are given in the tests below:
+#
+# Your goal is to write the score method.
+
+def score(dice)
+  # You need to write this method
+  #--
+  result = 0
+  (1..6).each do |face|
+    count = dice.select { |n| n == face }.size
+    while count > 0
+      if count >= 3
+        result += (face == 1) ? 1000 : 100 * face
+        count -= 3
+      elsif face == 5
+        result += count * 50
+        count = 0
+      elsif face == 1
+        result += count * 100
+        count = 0
+      else
+        count = 0
+      end
+    end
+  end
+  result
+  #++
+end
+
+class AboutScoringAssignment < EdgeCase::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_mulitple_1s_and_5s_is_the_sum
+    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])
+  end
+
+end