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julia/minesweeper/.exercism/metadata.json Normal file
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{"track":"julia","exercise":"minesweeper","id":"a839588890684ea89e338552c20ab03a","url":"https://exercism.io/my/solutions/a839588890684ea89e338552c20ab03a","handle":"halfdan","is_requester":true,"auto_approve":false}

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# Minesweeper
Add the mine counts to a completed Minesweeper board.
Minesweeper 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.
In this exercise you have to create some code that counts the number of
mines adjacent to a given empty square and replaces that square with the
count.
The board is a rectangle composed of blank space (' ') characters. A mine
is represented by an asterisk ('\*') character.
If a given space has no adjacent mines at all, leave that square blank.
## Examples
For example you may receive a 5 x 4 board like this (empty spaces are
represented here with the '·' character for display on screen):
```
·*·*·
··*··
··*··
·····
```
And your code will transform it into this:
```
1*3*1
13*31
·2*2·
·111·
```
## Version compatibility
This exercise has been tested on Julia versions >=1.0.
## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

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julia/minesweeper/minesweeper.ipynb Normal file
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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": ["# Minesweeper\n", "\n", "Add the mine counts to a completed Minesweeper board.\n", "\n", "Minesweeper is a popular game where the user has to find the mines using\n", "numeric hints that indicate how many mines are directly adjacent\n", "(horizontally, vertically, diagonally) to a square.\n", "\n", "In this exercise you have to create some code that counts the number of\n", "mines adjacent to a given empty square and replaces that square with the\n", "count.\n", "\n", "The board is a rectangle composed of blank space (' ') characters. A mine\n", "is represented by an asterisk ('\\*') character.\n", "\n", "If a given space has no adjacent mines at all, leave that square blank.\n", "\n", "## Examples\n", "\n", "For example you may receive a 5 x 4 board like this (empty spaces are\n", "represented here with the '·' character for display on screen):\n", "\n", "```\n", "·*·*·\n", "··*··\n", "··*··\n", "·····\n", "```\n", "\n", "And your code will transform it into this:\n", "\n", "```\n", "1*3*1\n", "13*31\n", "·2*2·\n", "·111·\n", "```\n", "\n", "## Version compatibility\n", "This exercise has been tested on Julia versions >=1.0.\n", "\n", "## Submitting Incomplete Solutions\n", "It's possible to submit an incomplete solution so you can see how others have completed the exercise."]
},
{
"cell_type": "markdown",
"metadata": {},
"source": ["## Your solution"]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": ["# submit"]
},
{
"cell_type": "markdown",
"metadata": {},
"source": ["## Test suite"]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": ["using Test\n", "\n", "# include(\"minesweeper.jl\")\n", "\n", "@testset \"no rows\" begin\n", " @test annotate([]) == []\n", "end\n", "\n", "@testset \"no columns\" begin\n", " @test annotate([\"\"]) == [\"\"]\n", "end\n", "\n", "@testset \"no mines\" begin\n", " minefield = [\" \",\n", " \" \",\n", " \" \"]\n", " out = [\" \",\n", " \" \",\n", " \" \"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"minefield only mines\" begin\n", " minefield = [\"***\",\n", " \"***\",\n", " \"***\"]\n", " out = [\"***\",\n", " \"***\",\n", " \"***\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"mine surrounded by spaces\" begin\n", " minefield = [\" \",\n", " \" * \",\n", " \" \"]\n", " out = [\"111\",\n", " \"1*1\",\n", " \"111\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"space surrounded by mines\" begin\n", " minefield = [\"***\",\n", " \"* *\",\n", " \"***\"]\n", " out = [\"***\",\n", " \"*8*\",\n", " \"***\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"horizontal line\" begin\n", " minefield = [\" * * \"]\n", " out = [\"1*2*1\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"horizontal line mines at edges\" begin\n", " minefield = [\"* *\"]\n", " out = [\"*1 1*\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"vertical line\" begin\n", " minefield = [\" \",\n", " \"*\",\n", " \" \",\n", " \"*\",\n", " \" \"]\n", " out = [\"1\",\n", " \"*\",\n", " \"2\",\n", " \"*\",\n", " \"1\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"vertical line mines at edges\" begin\n", " minefield = [\"*\",\n", " \" \",\n", " \" \",\n", " \" \",\n", " \"*\"]\n", " out = [\"*\",\n", " \"1\",\n", " \" \",\n", " \"1\",\n", " \"*\"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"cross\" begin\n", " minefield = [\" * \",\n", " \" * \",\n", " \"*****\",\n", " \" * \",\n", " \" * \"]\n", " out = [\" 2*2 \",\n", " \"25*52\",\n", " \"*****\",\n", " \"25*52\",\n", " \" 2*2 \"]\n", " @test annotate(minefield) == out\n", "end\n", "\n", "@testset \"large minefield\" begin\n", " minefield = [\" * * \",\n", " \" * \",\n", " \" * \",\n", " \" * *\",\n", " \" * * \",\n", " \" \"]\n", " out = [\"1*22*1\",\n", " \"12*322\",\n", " \" 123*2\",\n", " \"112*4*\",\n", " \"1*22*2\",\n", " \"111111\"]\n", " @test annotate(minefield) == out\n", "end"]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Prepare submission\n",
"To submit your exercise, you need to save your solution in a file called `minesweeper.jl` before using the CLI.\n",
"You can either create it manually or use the following functions, which will automatically write every notebook cell that starts with `# submit` to the file `minesweeper.jl`.\n"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"# using Pkg; Pkg.add(\"Exercism\")\n",
"# using Exercism\n",
"# Exercism.create_submission(\"minesweeper\")"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Julia 1.3.0",
"language": "julia",
"name": "julia-1.3"
},
"language_info": {
"file_extension": ".jl",
"mimetype": "application/julia",
"name": "julia",
"version": "1.3.0"
}
},
"nbformat": 4,
"nbformat_minor": 2
}

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julia/minesweeper/minesweeper.jl Normal file
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function annotate(field)
afield = []
for x ∈ 1:length(field)
line = ""
for y ∈ 1:length(field[x])
el = field[x][y]
if el == '*'
line = "$line$el"
continue
end
stars = 0
if x > 1
stars += count(c -> c == '*', field[x - 1][max(y - 1, 1):min(y + 1, length(field[x]))])
end
stars += count(c -> c == '*', field[x][max(y - 1, 1):min(y + 1, length(field[x]))])
if x < length(field)
stars += count(c -> c == '*', field[x + 1][max(y - 1, 1):min(y + 1, length(field[x]))])
end
ch = stars == 0 ? " " : "$stars"
line = "$line$ch"
end
append!(afield, [line])
end
afield
end

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julia/minesweeper/runtests.jl Normal file
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using Test
include("minesweeper.jl")
@testset "no rows" begin
@test annotate([]) == []
end
# @testset "no columns" begin
# @test annotate([""]) == [""]
# end
@testset "no mines" begin
minefield = [" ",
" ",
" "]
out = [" ",
" ",
" "]
@test annotate(minefield) == out
end
@testset "minefield only mines" begin
minefield = ["***",
"***",
"***"]
out = ["***",
"***",
"***"]
@test annotate(minefield) == out
end
@testset "mine surrounded by spaces" begin
minefield = [" ",
" * ",
" "]
out = ["111",
"1*1",
"111"]
@test annotate(minefield) == out
end
@testset "space surrounded by mines" begin
minefield = ["***",
"* *",
"***"]
out = ["***",
"*8*",
"***"]
@test annotate(minefield) == out
end
@testset "horizontal line" begin
minefield = [" * * "]
out = ["1*2*1"]
@test annotate(minefield) == out
end
@testset "horizontal line mines at edges" begin
minefield = ["* *"]
out = ["*1 1*"]
@test annotate(minefield) == out
end
@testset "vertical line" begin
minefield = [" ",
"*",
" ",
"*",
" "]
out = ["1",
"*",
"2",
"*",
"1"]
@test annotate(minefield) == out
end
@testset "vertical line mines at edges" begin
minefield = ["*",
" ",
" ",
" ",
"*"]
out = ["*",
"1",
" ",
"1",
"*"]
@test annotate(minefield) == out
end
@testset "cross" begin
minefield = [" * ",
" * ",
"*****",
" * ",
" * "]
out = [" 2*2 ",
"25*52",
"*****",
"25*52",
" 2*2 "]
@test annotate(minefield) == out
end
@testset "large minefield" begin
minefield = [" * * ",
" * ",
" * ",
" * *",
" * * ",
" "]
out = ["1*22*1",
"12*322",
" 123*2",
"112*4*",
"1*22*2",
"111111"]
@test annotate(minefield) == out
end