scrabble-score-exercise: Added new exercise (#128)

config.json

@@ -390,6 +390,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 4
+      },
+      {
+        "slug": "scrabble-score",
+        "name": "Scrabble Score",
+        "uuid": "b03f5c6e-86c4-4aa7-92cc-7587dd5dc3d3",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 4
       }
     ]
   },

exercises/practice/scrabble-score/.docs/instructions.md

@@ -0,0 +1,25 @@
+# Instructions
+
+Your task is to compute a word's Scrabble score by summing the values of its letters.
+
+The letters are valued as follows:
+
+| Letter                       | Value |
+| ---------------------------- | ----- |
+| A, E, I, O, U, L, N, R, S, T | 1     |
+| D, G                         | 2     |
+| B, C, M, P                   | 3     |
+| F, H, V, W, Y                | 4     |
+| K                            | 5     |
+| J, X                         | 8     |
+| Q, Z                         | 10    |
+
+For example, the word "cabbage" is worth 14 points:
+
+- 3 points for C
+- 1 point for A
+- 3 points for B
+- 3 points for B
+- 1 point for A
+- 2 points for G
+- 1 point for E

exercises/practice/scrabble-score/.docs/introduction.md

@@ -0,0 +1,7 @@
+# Introduction
+
+[Scrabble][wikipedia] is a word game where players place letter tiles on a board to form words.
+Each letter has a value.
+A word's score is the sum of its letters' values.
+
+[wikipedia]: https://en.wikipedia.org/wiki/Scrabble

exercises/practice/scrabble-score/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "SimaDovakin"
+  ],
+  "files": {
+    "solution": [
+      "scrabbleScore.u"
+    ],
+    "test": [
+      "scrabbleScore.test.u"
+    ],
+    "example": [
+      ".meta/examples/scrabbleScore.example.u"
+    ]
+  },
+  "blurb": "Given a word, compute the Scrabble score for that word.",
+  "source": "Inspired by the Extreme Startup game",
+  "source_url": "https://github.com/rchatley/extreme_startup"
+}

exercises/practice/scrabble-score/.meta/examples/scrabbleScore.example.u

@@ -0,0 +1,17 @@
+scrabbleScore.score : Text -> Nat
+scrabbleScore.score word =
+  word
+    |> toCharList
+    |> List.foldLeft (total ch -> total + charToScore ch) 0
+
+scrabbleScore.charToScore : Char -> Nat
+scrabbleScore.charToScore char =
+  match toUppercase char with
+    c | List.contains c [?A, ?E, ?I, ?O, ?U, ?L, ?N, ?R, ?S, ?T] -> 1
+    c | List.contains c [?D, ?G] -> 2
+    c | List.contains c [?B, ?C, ?M, ?P] -> 3
+    c | List.contains c [?F, ?H, ?V, ?W, ?Y] -> 4
+    c | List.contains c [?J, ?X] -> 8
+    c | List.contains c [?Q, ?Z] -> 10
+    ?K -> 5
+    _ -> 0

exercises/practice/scrabble-score/.meta/testAnnotation.json

@@ -0,0 +1,46 @@
+[
+  {
+    "name": "scrabbleScore.score.tests.ex1",
+    "test_code": "expect (1 == scrabbleScore.score \"a\")\n    |> Test.label \"lowercase letter\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex2",
+    "test_code": "expect (1 == scrabbleScore.score \"A\")\n    |> Test.label \"uppercase letter\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex3",
+    "test_code": "expect (4 == scrabbleScore.score \"f\")\n    |> Test.label \"valuable letter\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex4",
+    "test_code": "expect (2 == scrabbleScore.score \"at\")\n    |> Test.label \"short word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex5",
+    "test_code": "expect (12 == scrabbleScore.score \"zoo\")\n    |> Test.label \"short, valuable word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex6",
+    "test_code": "expect (6 == scrabbleScore.score \"street\")\n    |> Test.label \"medium word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex7",
+    "test_code": "expect (22 == scrabbleScore.score \"quirky\")\n    |> Test.label \"medium, valuable word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex8",
+    "test_code": "expect (41 == scrabbleScore.score \"OxyphenButazone\")\n    |> Test.label \"long, mixed-case word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex9",
+    "test_code": "expect (8 == scrabbleScore.score \"pinata\")\n    |> Test.label \"english-like word\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex10",
+    "test_code": "expect (0 == scrabbleScore.score \"\")\n    |> Test.label \"empty input\""
+  },
+  {
+    "name": "scrabbleScore.score.tests.ex11",
+    "test_code": "expect (87 == scrabbleScore.score \"abcdefghijklmnopqrstuvwxyz\")\n    |> Test.label \"entire alphabet available\""
+  }
+]

exercises/practice/scrabble-score/.meta/testLoader.md

@@ -0,0 +1,9 @@
+# Testing transcript for scrabble-score exercise
+
+```ucm
+.> load ./scrabbleScore.u
+.> add
+.> load ./scrabbleScore.test.u
+.> add
+.> move.term scrabbleScore.tests tests
+```

exercises/practice/scrabble-score/.meta/tests.toml

@@ -0,0 +1,43 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[f46cda29-1ca5-4ef2-bd45-388a767e3db2]
+description = "lowercase letter"
+
+[f7794b49-f13e-45d1-a933-4e48459b2201]
+description = "uppercase letter"
+
+[eaba9c76-f9fa-49c9-a1b0-d1ba3a5b31fa]
+description = "valuable letter"
+
+[f3c8c94e-bb48-4da2-b09f-e832e103151e]
+description = "short word"
+
+[71e3d8fa-900d-4548-930e-68e7067c4615]
+description = "short, valuable word"
+
+[d3088ad9-570c-4b51-8764-c75d5a430e99]
+description = "medium word"
+
+[fa20c572-ad86-400a-8511-64512daac352]
+description = "medium, valuable word"
+
+[9336f0ba-9c2b-4fa0-bd1c-2e2d328cf967]
+description = "long, mixed-case word"
+
+[1e34e2c3-e444-4ea7-b598-3c2b46fd2c10]
+description = "english-like word"
+
+[4efe3169-b3b6-4334-8bae-ff4ef24a7e4f]
+description = "empty input"
+
+[3b305c1c-f260-4e15-a5b5-cb7d3ea7c3d7]
+description = "entire alphabet available"

exercises/practice/scrabble-score/scrabbleScore.test.u

@@ -0,0 +1,57 @@
+scrabbleScore.score.tests.ex1 =
+  expect (1 == scrabbleScore.score "a")
+    |> Test.label "lowercase letter"
+
+scrabbleScore.score.tests.ex2 =
+  expect (1 == scrabbleScore.score "A")
+    |> Test.label "uppercase letter"
+
+scrabbleScore.score.tests.ex3 =
+  expect (4 == scrabbleScore.score "f")
+    |> Test.label "valuable letter"
+
+scrabbleScore.score.tests.ex4 =
+  expect (2 == scrabbleScore.score "at")
+    |> Test.label "short word"
+
+scrabbleScore.score.tests.ex5 =
+  expect (12 == scrabbleScore.score "zoo")
+    |> Test.label "short, valuable word"
+
+scrabbleScore.score.tests.ex6 =
+  expect (6 == scrabbleScore.score "street")
+    |> Test.label "medium word"
+
+scrabbleScore.score.tests.ex7 =
+  expect (22 == scrabbleScore.score "quirky")
+    |> Test.label "medium, valuable word"
+
+scrabbleScore.score.tests.ex8 =
+  expect (41 == scrabbleScore.score "OxyphenButazone")
+    |> Test.label "long, mixed-case word"
+
+scrabbleScore.score.tests.ex9 =
+  expect (8 == scrabbleScore.score "pinata")
+    |> Test.label "english-like word"
+
+scrabbleScore.score.tests.ex10 =
+  expect (0 == scrabbleScore.score "")
+    |> Test.label "empty input"
+
+scrabbleScore.score.tests.ex11 =
+  expect (87 == scrabbleScore.score "abcdefghijklmnopqrstuvwxyz")
+    |> Test.label "entire alphabet available"
+
+test> scrabbleScore.tests = runAll [
+  scrabbleScore.score.tests.ex1,
+  scrabbleScore.score.tests.ex2,
+  scrabbleScore.score.tests.ex3,
+  scrabbleScore.score.tests.ex4,
+  scrabbleScore.score.tests.ex5,
+  scrabbleScore.score.tests.ex6,
+  scrabbleScore.score.tests.ex7,
+  scrabbleScore.score.tests.ex8,
+  scrabbleScore.score.tests.ex9,
+  scrabbleScore.score.tests.ex10,
+  scrabbleScore.score.tests.ex11
+]

exercises/practice/scrabble-score/scrabbleScore.u

@@ -0,0 +1,2 @@
+scrabbleScore.score : Text -> Nat
+scrabbleScore.score word = todo "implement score"