flower-field replaces minesweeper

.github/workflows/tests.yml

@@ -95,7 +95,7 @@ jobs:
           # most of the time caches should hit.
           echo "::set-output name=week-no::$(date -u +%Y-%U)"
 
-      - uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9
+      - uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
         id: cache
         with:
           path: |

config.json

@@ -42,60 +42,60 @@
         "slug": "lucians-luscious-lasagna",
         "name": "Lucian's Luscious Lasagna",
         "uuid": "3aa220cb-606f-45c5-9b7a-4bce0e4eb20d",
-        "prerequisites": [],
-        "status": "beta",
         "concepts": [
           "basics"
-        ]
+        ],
+        "prerequisites": [],
+        "status": "beta"
       },
       {
         "slug": "temperature",
         "name": "Temperature",
         "uuid": "6ed15adb-f022-4bbd-bbb3-22845deabc91",
+        "concepts": [
+          "numbers"
+        ],
         "prerequisites": [
           "basics"
         ],
-        "status": "beta",
-        "concepts": [
-          "numbers"
-        ]
+        "status": "beta"
       },
       {
         "slug": "pacman-rules",
         "name": "Pac-Man Rules",
         "uuid": "9050f8c3-9976-4c4d-93e7-c9c549b1c524",
+        "concepts": [
+          "booleans"
+        ],
         "prerequisites": [
           "basics"
         ],
-        "status": "wip",
-        "concepts": [
-          "booleans"
-        ]
+        "status": "wip"
       },
       {
         "slug": "guessing-game",
         "name": "Guessing Game",
         "uuid": "fb9868eb-ce4f-4e6b-aa0d-b47d3451070f",
+        "concepts": [
+          "pattern-matching-literals"
+        ],
         "prerequisites": [
           "numbers"
         ],
-        "status": "beta",
-        "concepts": [
-          "pattern-matching-literals"
-        ]
+        "status": "beta"
       },
       {
         "slug": "valentines-day",
         "name": "Valentines Day",
         "uuid": "537d8df3-0b12-4dbe-aa86-65ae79c4de0e",
+        "concepts": [
+          "algebraic-data-types"
+        ],
         "prerequisites": [
           "pattern-matching-literals",
           "numbers"
         ],
-        "status": "beta",
-        "concepts": [
-          "algebraic-data-types"
-        ]
+        "status": "beta"
       }
     ],
     "practice": [
@@ -297,8 +297,7 @@
         "uuid": "dde7cf64-7e3b-4e5c-8a65-5d639fa8a307",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 5,
-        "topics": []
+        "difficulty": 5
       },
       {
         "slug": "luhn",
@@ -325,23 +324,30 @@
           "number_theory"
         ]
       },
+      {
+        "slug": "flower-field",
+        "name": "Flower Field",
+        "uuid": "1eff202c-ef0c-43d2-9077-7837914bc8b0",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 7
+      },
       {
         "slug": "minesweeper",
         "name": "Minesweeper",
         "uuid": "821f2081-dfc2-40c6-8e12-2907daa04416",
         "practices": [],
         "prerequisites": [],
         "difficulty": 7,
-        "topics": []
+        "status": "deprecated"
       },
       {
         "slug": "game-of-life",
         "name": "Game of Life",
         "uuid": "eb221634-15c6-463c-8268-54a3c3aa0c66",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 7,
-        "topics": []
+        "difficulty": 7
       },
       {
         "slug": "perfect-numbers",
@@ -496,8 +502,7 @@
         "uuid": "00b6c83b-e652-4f71-a094-b3034f77fd7b",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
-        "topics": []
+        "difficulty": 4
       },
       {
         "slug": "food-chain",
@@ -868,8 +873,7 @@
         "uuid": "01401d15-6667-4f94-bcd2-ec5a70df1cc6",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 4,
-        "topics": []
+        "difficulty": 4
       },
       {
         "slug": "sieve",
@@ -926,8 +930,7 @@
         "uuid": "78971281-153d-4bdc-8f90-4b7eded2b201",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 8,
-        "topics": []
+        "difficulty": 8
       },
       {
         "slug": "pov",
@@ -1042,8 +1045,7 @@
         "uuid": "f49d76f7-f826-4b6a-a514-47af7e84144a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 6,
-        "topics": []
+        "difficulty": 6
       },
       {
         "slug": "sgf-parsing",
@@ -1097,8 +1099,7 @@
         "uuid": "7157a846-5846-47a4-97c2-daad7f763512",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 3,
-        "topics": []
+        "difficulty": 3
       },
       {
         "slug": "roman-numerals",
@@ -1302,7 +1303,6 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
-        "topics": null,
         "status": "deprecated"
       },
       {
@@ -1312,7 +1312,6 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
-        "topics": null,
         "status": "deprecated"
       },
       {
@@ -1322,7 +1321,6 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
-        "topics": null,
         "status": "deprecated"
       },
       {
@@ -1332,7 +1330,6 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
-        "topics": null,
         "status": "deprecated"
       },
       {
@@ -1342,7 +1339,6 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 1,
-        "topics": null,
         "status": "deprecated"
       },
       {
@@ -1443,15 +1439,15 @@
     }
   ],
   "tags": [
+    "execution_mode/compiled",
     "paradigm/declarative",
     "paradigm/functional",
-    "typing/static",
-    "typing/strong",
-    "execution_mode/compiled",
-    "platform/windows",
-    "platform/mac",
     "platform/linux",
+    "platform/mac",
+    "platform/windows",
     "runtime/standalone_executable",
+    "typing/static",
+    "typing/strong",
     "used_for/backends",
     "used_for/financial_systems"
   ]

exercises/practice/flower-field/.docs/instructions.md

@@ -0,0 +1,26 @@
+# Instructions
+
+Your task is to add flower counts to empty squares in a completed Flower Field garden.
+The garden itself is a rectangle board composed of squares that are either empty (`' '`) or a flower (`'*'`).
+
+For each empty square, count the number of flowers adjacent to it (horizontally, vertically, diagonally).
+If the empty square has no adjacent flowers, leave it empty.
+Otherwise replace it with the count of adjacent flowers.
+
+For example, you may receive a 5 x 4 board like this (empty spaces are represented here with the '·' character for display on screen):
+
+```text
+·*·*·
+··*··
+··*··
+·····
+```
+
+Which your code should transform into this:
+
+```text
+1*3*1
+13*31
+·2*2·
+·111·
+```

exercises/practice/flower-field/.docs/introduction.md

@@ -0,0 +1,7 @@
+# Introduction
+
+[Flower Field][history] is a compassionate reimagining of the popular game Minesweeper.
+The object of the game is to find all the flowers in the garden using numeric hints that indicate how many flowers are directly adjacent (horizontally, vertically, diagonally) to a square.
+"Flower Field" shipped in regional versions of Microsoft Windows in Italy, Germany, South Korea, Japan and Taiwan.
+
+[history]: https://web.archive.org/web/20020409051321fw_/http://rcm.usr.dsi.unimi.it/rcmweb/fnm/

exercises/practice/flower-field/.meta/config.json

@@ -0,0 +1,33 @@
+{
+  "authors": [
+    "etrepum"
+  ],
+  "contributors": [
+    "ffflorian",
+    "iHiD",
+    "keiravillekode",
+    "kytrinyx",
+    "lpalma",
+    "petertseng",
+    "ppartarr",
+    "rbasso",
+    "sshine",
+    "tejasbubane"
+  ],
+  "files": {
+    "solution": [
+      "src/FlowerField.hs",
+      "package.yaml"
+    ],
+    "test": [
+      "test/Tests.hs"
+    ],
+    "example": [
+      ".meta/examples/success-standard/src/FlowerField.hs"
+    ],
+    "invalidator": [
+      "stack.yaml"
+    ]
+  },
+  "blurb": "Mark all the flowers in a garden."
+}

exercises/practice/flower-field/.meta/examples/success-standard/package.yaml

@@ -0,0 +1,16 @@
+name: flower-field
+
+dependencies:
+  - base
+
+library:
+  exposed-modules: FlowerField
+  source-dirs: src
+
+tests:
+  test:
+    main: Tests.hs
+    source-dirs: test
+    dependencies:
+      - flower-field
+      - hspec

exercises/practice/flower-field/.meta/examples/success-standard/src/FlowerField.hs

@@ -0,0 +1,25 @@
+module FlowerField (annotate) where
+
+import Data.Char  (intToDigit)
+import Data.Maybe (mapMaybe)
+
+annotate :: [String] -> [String]
+annotate xss = [[ fixTile x (i, j)
+                | (j, x ) <- zip [0..] xs  ]
+                | (i, xs) <- zip [0..] xss ]
+  where
+
+    flowers = length . filter (== '*') . mapMaybe (`lookup` tiles) . neighbors
+
+    fixTile ' ' position = case flowers position of
+        0 -> ' '
+        x -> intToDigit x
+    fixTile x _ = x
+
+    neighbors (i, j) = [ (i - 1, j - 1), (i - 1, j), (i - 1, j + 1)
+                       , (i    , j - 1),             (i    , j + 1)
+                       , (i + 1, j - 1), (i + 1, j), (i + 1, j + 1) ]
+
+    tiles = [ ((i, j), x)
+            | (i, xs) <- zip [0 :: Int ..] xss
+            , (j, x ) <- zip [0 :: Int ..] xs  ]