Add minesweeper exercise

config.json

@@ -506,6 +506,14 @@
         "prerequisites": [],
         "difficulty": 5
       },
+      {
+        "slug": "minesweeper",
+        "name": "Minesweeper",
+        "uuid": "475d74fd-8387-4a6b-9323-5715b1691d1c",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 5
+      },
       {
         "slug": "strain",
         "name": "Strain",

exercises/practice/minesweeper/.docs/instructions.md

@@ -0,0 +1,26 @@
+# Instructions
+
+Your task is to add the mine counts to empty squares in a completed Minesweeper board.
+The board itself is a rectangle composed of squares that are either empty (`' '`) or a mine (`'*'`).
+
+For each empty square, count the number of mines adjacent to it (horizontally, vertically, diagonally).
+If the empty square has no adjacent mines, leave it empty.
+Otherwise replace it with the adjacent mines count.
+
+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/minesweeper/.docs/introduction.md

@@ -0,0 +1,5 @@
+# Introduction
+
+[Minesweeper][wikipedia] is a popular game where the user has to find the mines using numeric hints that indicate how many mines are directly adjacent (horizontally, vertically, diagonally) to a square.
+
+[wikipedia]: https://en.wikipedia.org/wiki/Minesweeper_(video_game)

exercises/practice/minesweeper/.meta/config.json

@@ -0,0 +1,17 @@
+{
+  "authors": [
+    "erikschierboom"
+  ],
+  "files": {
+    "solution": [
+      "minesweeper.ua"
+    ],
+    "test": [
+      "tests.ua"
+    ],
+    "example": [
+      ".meta/example.ua"
+    ]
+  },
+  "blurb": "Add the numbers to a minesweeper board."
+}

exercises/practice/minesweeper/.meta/example.ua

@@ -0,0 +1,3 @@
+Neighbors ← /+≡⬚0↻♭₂-1⇡3_3¤
+Cell      ← ⨬(⨬(@ |+@0)±.|@*◌)
+Annotate  ← ≡≡Cell ⟜Neighbors =@*

exercises/practice/minesweeper/.meta/tests.toml

@@ -0,0 +1,46 @@
+# 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.
+
+[0c5ec4bd-dea7-4138-8651-1203e1cb9f44]
+description = "no rows"
+
+[650ac4c0-ad6b-4b41-acde-e4ea5852c3b8]
+description = "no columns"
+
+[6fbf8f6d-a03b-42c9-9a58-b489e9235478]
+description = "no mines"
+
+[61aff1c4-fb31-4078-acad-cd5f1e635655]
+description = "minefield with only mines"
+
+[84167147-c504-4896-85d7-246b01dea7c5]
+description = "mine surrounded by spaces"
+
+[cb878f35-43e3-4c9d-93d9-139012cccc4a]
+description = "space surrounded by mines"
+
+[7037f483-ddb4-4b35-b005-0d0f4ef4606f]
+description = "horizontal line"
+
+[e359820f-bb8b-4eda-8762-47b64dba30a6]
+description = "horizontal line, mines at edges"
+
+[c5198b50-804f-47e9-ae02-c3b42f7ce3ab]
+description = "vertical line"
+
+[0c79a64d-703d-4660-9e90-5adfa5408939]
+description = "vertical line, mines at edges"
+
+[4b098563-b7f3-401c-97c6-79dd1b708f34]
+description = "cross"
+
+[04a260f1-b40a-4e89-839e-8dd8525abe0e]
+description = "large minefield"

exercises/practice/minesweeper/minesweeper.ua

@@ -0,0 +1,3 @@
+# Annotate a minesweeper minefield
+# Annotated ? Minefield
+Annotate ← |1 ⊙(⍤"Please implement Annotate" 0)

exercises/practice/minesweeper/tests.ua

@@ -0,0 +1,155 @@
+~ "minesweeper.ua" ~ Annotate
+
+# No rows
+Minefield ← ""
+Expected  ← ""
+⍤⤙≍ Expected Annotate Minefield
+
+# No columns
+Minefield ← [
+  ""
+]
+Expected ← [
+  ""
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# No mines
+Minefield ← [
+  "   "
+  "   "
+  "   "
+]
+Expected ← [
+  "   "
+  "   "
+  "   "
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Minefield with only mines
+Minefield ← [
+  "***"
+  "***"
+  "***"
+]
+Expected ← [
+  "***"
+  "***"
+  "***"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Mine surrounded by spaces
+Minefield ← [
+  "   "
+  " * "
+  "   "
+]
+Expected ← [
+  "111"
+  "1*1"
+  "111"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Space surrounded by mines
+Minefield ← [
+  "***"
+  "* *"
+  "***"
+]
+Expected ← [
+  "***"
+  "*8*"
+  "***"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Horizontal line
+Minefield ← [
+  " * * "
+]
+Expected ← [
+  "1*2*1"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Horizontal line, mines at edges
+Minefield ← [
+  "*   *"
+]
+Expected ← [
+  "*1 1*"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Vertical line
+Minefield ← [
+  " "
+  "*"
+  " "
+  "*"
+  " "
+]
+Expected ← [
+  "1"
+  "*"
+  "2"
+  "*"
+  "1"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Vertical line, mines at edges
+Minefield ← [
+  "*"
+  " "
+  " "
+  " "
+  "*"
+]
+Expected ← [
+  "*"
+  "1"
+  " "
+  "1"
+  "*"
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Cross
+Minefield ← [
+  "  *  "
+  "  *  "
+  "*****"
+  "  *  "
+  "  *  "
+]
+Expected ← [
+  " 2*2 "
+  "25*52"
+  "*****"
+  "25*52"
+  " 2*2 "
+]
+⍤⤙≍ Expected Annotate Minefield
+
+# Large minefield
+Minefield ← [
+  " *  * "
+  "  *   "
+  "    * "
+  "   * *"
+  " *  * "
+  "      "
+]
+Expected ← [
+  "1*22*1"
+  "12*322"
+  " 123*2"
+  "112*4*"
+  "1*22*2"
+  "111111"
+]
+⍤⤙≍ Expected Annotate Minefield