From ac726d26a2a9fe68c19224bc71a5378575258d01 Mon Sep 17 00:00:00 2001
From: HeNine <>
Date: Sat, 4 Dec 2021 08:34:47 +0100
Subject: [PATCH] =?UTF-8?q?Day=20=E5=9B=9B?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day04/Project.toml    |   4 +
 day04/data/case00.txt |  19 ++
 day04/data/case01.txt | 601 ++++++++++++++++++++++++++++++++++++++++++
 day04/src/day04.jl    |  87 ++++++
 4 files changed, 711 insertions(+)
 create mode 100644 day04/Project.toml
 create mode 100644 day04/data/case00.txt
 create mode 100644 day04/data/case01.txt
 create mode 100644 day04/src/day04.jl

diff --git a/day04/Project.toml b/day04/Project.toml
new file mode 100644
index 0000000..489d624
--- /dev/null
+++ b/day04/Project.toml
@@ -0,0 +1,4 @@
+name = "day04"
+uuid = "f9fd4d90-8678-4e31-8ef5-59b4e7ee8fbb"
+authors = ["HeNine "]
+version = "0.1.0"
diff --git a/day04/data/case00.txt b/day04/data/case00.txt
new file mode 100644
index 0000000..49d17bc
--- /dev/null
+++ b/day04/data/case00.txt
@@ -0,0 +1,19 @@
+7,4,9,5,11,17,23,2,0,14,21,24,10,16,13,6,15,25,12,22,18,20,8,19,3,26,1
+
+22 13 17 11  0
+ 8  2 23  4 24
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+ 1 12 20 15 19
+
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+14 21 16 12  6
+
+14 21 17 24  4
+10 16 15  9 19
+18  8 23 26 20
+22 11 13  6  5
+ 2  0 12  3  7
\ No newline at end of file
diff --git a/day04/data/case01.txt b/day04/data/case01.txt
new file mode 100644
index 0000000..6ea541f
--- /dev/null
+++ b/day04/data/case01.txt
@@ -0,0 +1,601 @@
+15,62,2,39,49,25,65,28,84,59,75,24,20,76,60,55,17,7,93,69,32,23,44,81,8,67,41,56,43,89,95,97,61,77,64,37,29,10,79,26,51,48,5,86,71,58,78,90,57,82,45,70,11,14,13,50,68,94,99,22,47,12,1,74,18,46,4,6,88,54,83,96,63,66,35,27,36,72,42,98,0,52,40,91,33,21,34,85,3,38,31,92,9,87,19,73,30,16,53,80
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\ No newline at end of file
diff --git a/day04/src/day04.jl b/day04/src/day04.jl
new file mode 100644
index 0000000..30d9962
--- /dev/null
+++ b/day04/src/day04.jl
@@ -0,0 +1,87 @@
+function task0(file)
+    rand_numbers = readline(file) |> x -> split(x, ",") .|> x -> parse(Int, x)
+
+    boards = []
+
+    while !eof(file)
+        push!(boards,
+            [readline(file, keep = true) for i = 1:6] |>
+            x -> vcat("[", x, "]") |>
+                 join |>
+                 Meta.parse |>
+                 eval |>
+                 x -> convert(Array{Union{Int,Missing},2}, x)
+        )
+    end
+
+    for number in rand_numbers
+        for board in boards
+            board[(board.==number).&map(!, board .=== missing)] .= missing
+
+            if any(map(!, (board .=== missing)) * ones(size(board, 2)) .== 0) ||
+               any(map(!, (board .=== missing))' * ones(size(board, 1)) .== 0)
+
+                return sum(skipmissing(board)) * number
+            end
+        end
+    end
+
+    boards
+end
+
+##
+
+println("Day 04 – Task 1 – Case 0")
+open(task0, "day04\\data\\case00.txt") |> println
+
+println("Day 04 – Task 1 – Case 1")
+open(task0, "day04\\data\\case01.txt") |> println
+
+##
+
+function task1(file)
+    rand_numbers = readline(file) |> x -> split(x, ",") .|> x -> parse(Int, x)
+
+    boards = []
+
+    while !eof(file)
+        push!(boards,
+            [readline(file, keep = true) for i = 1:6] |>
+            x -> vcat("[", x, "]") |>
+                 join |>
+                 Meta.parse |>
+                 eval |>
+                 x -> convert(Array{Union{Int,Missing},2}, x)
+        )
+    end
+
+    for number in rand_numbers
+        toremove = []
+
+        for (i, board) in enumerate(boards)
+            board[(board.==number).&map(!, board .=== missing)] .= missing
+
+            if any(map(!, (board .=== missing)) * ones(size(board, 2)) .== 0) ||
+               any(map(!, (board .=== missing))' * ones(size(board, 1)) .== 0)
+
+                if length(boards) == 1
+                    return sum(skipmissing(board)) * number
+                else
+                    push!(toremove, i)
+                end
+            end
+        end
+
+        boards = toremove |> x -> deleteat!(boards, x)
+    end
+
+    boards
+end
+
+##
+
+println("Day 04 – Task 2 – Case 0")
+open(task1, "day04\\data\\case00.txt") |> println
+
+println("Day 03 – Task 2 – Case 1")
+open(task1, "day04\\data\\case01.txt") |> println