add yacht (#273)

config.json

@@ -510,6 +510,14 @@
           "string_manipulation"
         ]
       },
+      {
+        "slug": "yacht",
+        "name": "Yacht",
+        "uuid": "799f5b50-8764-4ffc-8ba2-3cbd052485c7",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 2
+      },
       {
         "slug": "all-your-base",
         "name": "All Your Base",

exercises/practice/yacht/.docs/instructions.md

@@ -0,0 +1,30 @@
+# Instructions
+
+Given five dice and a category, calculate the score of the dice for that category.
+
+~~~~exercism/note
+You'll always be presented with five dice.
+Each dice's value will be between one and six inclusively.
+The dice may be unordered.
+~~~~
+
+## Scores in Yacht
+
+| Category        | Score                  | Description                              | Example             |
+| --------------- | ---------------------- | ---------------------------------------- | ------------------- |
+| Ones            | 1 × number of ones     | Any combination                          | 1 1 1 4 5 scores 3  |
+| Twos            | 2 × number of twos     | Any combination                          | 2 2 3 4 5 scores 4  |
+| Threes          | 3 × number of threes   | Any combination                          | 3 3 3 3 3 scores 15 |
+| Fours           | 4 × number of fours    | Any combination                          | 1 2 3 3 5 scores 0  |
+| Fives           | 5 × number of fives    | Any combination                          | 5 1 5 2 5 scores 15 |
+| Sixes           | 6 × number of sixes    | Any combination                          | 2 3 4 5 6 scores 6  |
+| Full House      | Total of the dice      | Three of one number and two of another   | 3 3 3 5 5 scores 19 |
+| Four of a Kind  | Total of the four dice | At least four dice showing the same face | 4 4 4 4 6 scores 16 |
+| Little Straight | 30 points              | 1-2-3-4-5                                | 1 2 3 4 5 scores 30 |
+| Big Straight    | 30 points              | 2-3-4-5-6                                | 2 3 4 5 6 scores 30 |
+| Choice          | Sum of the dice        | Any combination                          | 2 3 3 4 6 scores 18 |
+| Yacht           | 50 points              | All five dice showing the same face      | 4 4 4 4 4 scores 50 |
+
+If the dice do **not** satisfy the requirements of a category, the score is zero.
+If, for example, _Four Of A Kind_ is entered in the _Yacht_ category, zero points are scored.
+A _Yacht_ scores zero if entered in the _Full House_ category.

exercises/practice/yacht/.docs/introduction.md

@@ -0,0 +1,11 @@
+# Introduction
+
+Each year, something new is "all the rage" in your high school.
+This year it is a dice game: [Yacht][yacht].
+
+The game of Yacht is from the same family as Poker Dice, Generala and particularly Yahtzee, of which it is a precursor.
+The game consists of twelve rounds.
+In each, five dice are rolled and the player chooses one of twelve categories.
+The chosen category is then used to score the throw of the dice.
+
+[yacht]: https://en.wikipedia.org/wiki/Yacht_(dice_game)

exercises/practice/yacht/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "BNAndras"
+  ],
+  "files": {
+    "solution": [
+      "source/yacht.d"
+    ],
+    "test": [
+      "source/yacht.d"
+    ],
+    "example": [
+      "example/yacht.d"
+    ]
+  },
+  "blurb": "Score a single throw of dice in the game Yacht.",
+  "source": "James Kilfiger, using Wikipedia",
+  "source_url": "https://en.wikipedia.org/wiki/Yacht_(dice_game)"
+}

exercises/practice/yacht/.meta/tests.toml

@@ -0,0 +1,97 @@
+# 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.
+
+[3060e4a5-4063-4deb-a380-a630b43a84b6]
+description = "Yacht"
+
+[15026df2-f567-482f-b4d5-5297d57769d9]
+description = "Not Yacht"
+
+[36b6af0c-ca06-4666-97de-5d31213957a4]
+description = "Ones"
+
+[023a07c8-6c6e-44d0-bc17-efc5e1b8205a]
+description = "Ones, out of order"
+
+[7189afac-cccd-4a74-8182-1cb1f374e496]
+description = "No ones"
+
+[793c4292-dd14-49c4-9707-6d9c56cee725]
+description = "Twos"
+
+[dc41bceb-d0c5-4634-a734-c01b4233a0c6]
+description = "Fours"
+
+[f6125417-5c8a-4bca-bc5b-b4b76d0d28c8]
+description = "Yacht counted as threes"
+
+[464fc809-96ed-46e4-acb8-d44e302e9726]
+description = "Yacht of 3s counted as fives"
+
+[d054227f-3a71-4565-a684-5c7e621ec1e9]
+description = "Fives"
+
+[e8a036e0-9d21-443a-8b5f-e15a9e19a761]
+description = "Sixes"
+
+[51cb26db-6b24-49af-a9ff-12f53b252eea]
+description = "Full house two small, three big"
+
+[1822ca9d-f235-4447-b430-2e8cfc448f0c]
+description = "Full house three small, two big"
+
+[b208a3fc-db2e-4363-a936-9e9a71e69c07]
+description = "Two pair is not a full house"
+
+[b90209c3-5956-445b-8a0b-0ac8b906b1c2]
+description = "Four of a kind is not a full house"
+
+[32a3f4ee-9142-4edf-ba70-6c0f96eb4b0c]
+description = "Yacht is not a full house"
+
+[b286084d-0568-4460-844a-ba79d71d79c6]
+description = "Four of a Kind"
+
+[f25c0c90-5397-4732-9779-b1e9b5f612ca]
+description = "Yacht can be scored as Four of a Kind"
+
+[9f8ef4f0-72bb-401a-a871-cbad39c9cb08]
+description = "Full house is not Four of a Kind"
+
+[b4743c82-1eb8-4a65-98f7-33ad126905cd]
+description = "Little Straight"
+
+[7ac08422-41bf-459c-8187-a38a12d080bc]
+description = "Little Straight as Big Straight"
+
+[97bde8f7-9058-43ea-9de7-0bc3ed6d3002]
+description = "Four in order but not a little straight"
+
+[cef35ff9-9c5e-4fd2-ae95-6e4af5e95a99]
+description = "No pairs but not a little straight"
+
+[fd785ad2-c060-4e45-81c6-ea2bbb781b9d]
+description = "Minimum is 1, maximum is 5, but not a little straight"
+
+[35bd74a6-5cf6-431a-97a3-4f713663f467]
+description = "Big Straight"
+
+[87c67e1e-3e87-4f3a-a9b1-62927822b250]
+description = "Big Straight as little straight"
+
+[c1fa0a3a-40ba-4153-a42d-32bc34d2521e]
+description = "No pairs but not a big straight"
+
+[207e7300-5d10-43e5-afdd-213e3ac8827d]
+description = "Choice"
+
+[b524c0cf-32d2-4b40-8fb3-be3500f3f135]
+description = "Yacht as choice"

exercises/practice/yacht/dub.sdl

@@ -0,0 +1,2 @@
+name "zebra-puzzle"
+buildRequirements "disallowDeprecations"

exercises/practice/yacht/example/yacht.d

@@ -0,0 +1,69 @@
+module yacht;
+
+import std.algorithm;
+import std.array;
+
+enum Category
+{
+    ones,
+    twos,
+    threes,
+    fours,
+    fives,
+    sixes,
+    fullHouse,
+    fourOfAKind,
+    littleStraight,
+    bigStraight,
+    choice,
+    yacht
+}
+
+pure int[int] counts(immutable int[] dice)
+{
+    int[int] results;
+    foreach (die; dice)
+    {
+        results[die]++;
+    }
+
+    return results;
+}
+
+int score(immutable int[] dice, Category category)
+{
+    switch (category)
+    {
+    case Category.ones:
+        return dice.filter!(x => x == 1).sum;
+    case Category.twos:
+        return dice.filter!(x => x == 2).sum;
+    case Category.threes:
+        return dice.filter!(x => x == 3).sum;
+    case Category.fours:
+        return dice.filter!(x => x == 4).sum;
+    case Category.fives:
+        return dice.filter!(x => x == 5).sum;
+    case Category.sixes:
+        return dice.filter!(x => x == 6).sum;
+    case Category.fullHouse:
+        int[int] counter = counts(dice);
+        return counter.values.array.sort().array == [2, 3] ? dice.sum : 0;
+    case Category.fourOfAKind:
+        int[int] counter = counts(dice);
+        auto kvp = counter.byKeyValue.maxElement!(kv => kv.value);
+        return kvp.value >= 4 ? kvp.key * 4 : 0;
+    case Category.littleStraight:
+        return dice.dup.sort().array == [1, 2, 3, 4, 5] ? 30 : 0;
+    case Category.bigStraight:
+        return dice.dup.sort().array == [2, 3, 4, 5, 6] ? 30 : 0;
+    case Category.choice:
+        return dice.sum;
+    case Category.yacht:
+        int[int] counter = counts(dice);
+        return counter.values.array.maxElement == 5 ? 50 : 0;
+    default:
+        return 0;
+    }
+}
+

exercises/practice/yacht/source/yacht.d

@@ -0,0 +1,117 @@
+module yacht;
+
+enum Category
+{
+    ones,
+    twos,
+    threes,
+    fours,
+    fives,
+    sixes,
+    fullHouse,
+    fourOfAKind,
+    littleStraight,
+    bigStraight,
+    choice,
+    yacht
+}
+
+int score(immutable int[] dice, Category category)
+{
+    // implement this function
+}
+
+unittest
+{
+    immutable int allTestsEnabled = 0;
+
+    // Yacht
+    assert(score([5, 5, 5, 5, 5], Category.yacht) == 50);
+
+    static if (allTestsEnabled)
+    {
+        // Not Yacht
+        assert(score([1, 3, 3, 2, 5], Category.yacht) == 0);
+
+        // Ones
+        assert(score([1, 1, 1, 3, 5], Category.ones) == 3);
+
+        // Ones, out of order
+        assert(score([3, 1, 1, 5, 1], Category.ones) == 3);
+
+        // No ones
+        assert(score([4, 3, 6, 5, 5], Category.ones) == 0);
+
+        // Twos
+        assert(score([2, 3, 4, 5, 6], Category.twos) == 2);
+
+        // Fours
+        assert(score([1, 4, 1, 4, 1], Category.fours) == 8);
+
+        // Yacht counted as threes
+        assert(score([3, 3, 3, 3, 3], Category.threes) == 15);
+
+        // Yacht of 3s counted as fives
+        assert(score([3, 3, 3, 3, 3], Category.fives) == 0);
+
+        // Fives
+        assert(score([1, 5, 3, 5, 3], Category.fives) == 10);
+
+        // Sixes
+        assert(score([2, 3, 4, 5, 6], Category.sixes) == 6);
+
+        // Full house two small, three big
+        assert(score([2, 2, 4, 4, 4], Category.fullHouse) == 16);
+
+        // Full house three small, two big
+        assert(score([5, 3, 3, 5, 3], Category.fullHouse) == 19);
+
+        // Two pair is not a full house
+        assert(score([2, 2, 4, 4, 5], Category.fullHouse) == 0);
+
+        // Four of a kind is not a full house
+        assert(score([1, 4, 4, 4, 4], Category.fullHouse) == 0);
+
+        // Yacht is not a full house
+        assert(score([2, 2, 2, 2, 2], Category.fullHouse) == 0);
+
+        // Four of a Kind
+        assert(score([6, 6, 4, 6, 6], Category.fourOfAKind) == 24);
+
+        // Yacht can be scored as Four of a Kind
+        assert(score([3, 3, 3, 3, 3], Category.fourOfAKind) == 12);
+
+        // Full house is not Four of a Kind
+        assert(score([3, 3, 3, 5, 5], Category.fourOfAKind) == 0);
+
+        // Little Straight
+        assert(score([3, 5, 4, 1, 2], Category.littleStraight) == 30);
+
+        // Little Straight as Big Straight
+        assert(score([1, 2, 3, 4, 5], Category.bigStraight) == 0);
+
+        // Four in order but not a little straight
+        assert(score([1, 1, 2, 3, 4], Category.littleStraight) == 0);
+
+        // No pairs but not a little straight
+        assert(score([1, 2, 3, 4, 6], Category.littleStraight) == 0);
+
+        // Minimum is 1, maximum is 5, but not a little straight
+        assert(score([1, 1, 3, 4, 5], Category.littleStraight) == 0);
+
+        // Big Straight
+        assert(score([4, 6, 2, 5, 3], Category.bigStraight) == 30);
+
+        // Big Straight as little straight
+        assert(score([6, 5, 4, 3, 2], Category.littleStraight) == 0);
+
+        // No pairs but not a big straight
+        assert(score([6, 5, 4, 3, 1], Category.bigStraight) == 0);
+
+        // Choice
+        assert(score([3, 3, 5, 6, 6], Category.choice) == 23);
+
+        // Yacht as choice
+        assert(score([2, 2, 2, 2, 2], Category.choice) == 10);
+    }
+}