Add scrabble-score

config.json

@@ -464,6 +464,14 @@
           "nested_classes",
           "reactive_programming"
         ]
+      },
+      {
+        "slug": "scrabble-score",
+        "name": "Scrabble Score",
+        "uuid": "753c4d89-02b0-4856-935b-6471a84b4892",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 2
       }
     ]
   },

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

@@ -0,0 +1,40 @@
+# Instructions
+
+Given a word, compute the Scrabble score for that word.
+
+## Letter Values
+
+You'll need these:
+
+```text
+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
+```
+
+## Examples
+
+"cabbage" should be scored as worth 14 points:
+
+- 3 points for C
+- 1 point for A, twice
+- 3 points for B, twice
+- 2 points for G
+- 1 point for E
+
+And to total:
+
+- `3 + 2*1 + 2*3 + 2 + 1`
+- = `3 + 2 + 6 + 3`
+- = `5 + 9`
+- = 14
+
+## Extensions
+
+- You can play a double or a triple letter.
+- You can play a double or a triple word.

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

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "BNAndras"
+  ],
+  "files": {
+    "solution": [
+      "source/scrabble_score.d"
+    ],
+    "test": [
+      "source/scrabble_score.d"
+    ],
+    "example": [
+      "example/scrabble_score.d"
+    ]
+  },
+  "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/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/dub.sdl

@@ -0,0 +1,2 @@
+name "scrabble-score"
+buildRequirements "disallowDeprecations"

exercises/practice/scrabble-score/example/scrabble_score.d

@@ -0,0 +1,57 @@
+module scrabble_scores;
+
+import std.string;
+
+pure int score(immutable string word)
+{
+    int points = 0;
+    string upper = toUpper(word);
+    foreach (char letter; upper) {
+        switch (letter) {
+            case 'A':
+            case 'E':
+            case 'I':
+            case 'O':
+            case 'U':
+            case 'L':
+            case 'N':
+            case 'R':
+            case 'S':
+            case 'T':
+                points += 1;
+                break;
+            case 'D': 
+            case 'G':
+                points += 2;
+                break;
+            case 'B':
+            case 'C':
+            case 'M':
+            case 'P':
+                points += 3;
+                break;
+            case 'F':
+            case 'H':
+            case 'V':
+            case 'W': 
+            case 'Y':
+                points += 4;
+                break;
+            case 'K':
+                points += 5;
+                break;
+            case 'J':
+            case 'X':
+                points += 8;
+                break;
+            case 'Q':
+            case 'Z':
+                points += 10;
+                break;
+            default:
+                break;
+        }
+    }
+
+    return points;
+}

exercises/practice/scrabble-score/source/scrabble_score.d

@@ -0,0 +1,47 @@
+module scrabble_scores;
+
+pure int score(immutable string word)
+{
+    // Implement this function
+}
+
+unittest
+{
+    immutable int allTestsEnabled = 0;
+
+    // Lowercase letter
+    assert(score("a") == 1);
+
+    static if (allTestsEnabled)
+    {
+        // Uppercase letter
+        assert(score("A") == 1);
+
+        // Valuable letter
+        assert(score("f") == 4);
+
+        // Short word
+        assert(score("at") == 2);
+
+        // Short, valuable word
+        assert(score("zoo") == 12);
+
+        // Medium word
+        assert(score("street") == 6);
+
+        // Medium, valuable word
+        assert(score("quirky") == 22);
+
+        // Long, mixed-case word
+        assert(score("OxyphenButazone") == 41);
+
+        // English-like word
+        assert(score("pinata") == 8);
+
+        // Empty input
+        assert(score("") == 0);
+
+        // Entire alphabet available
+        assert(score("abcdefghijklmnopqrstuvwxyz") == 87);
+    }
+}