Day 四

day04/Project.toml

@@ -0,0 +1,4 @@
+name = "day04"
+uuid = "f9fd4d90-8678-4e31-8ef5-59b4e7ee8fbb"
+authors = ["HeNine "]
+version = "0.1.0"

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
+
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+
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+
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+22 11 13  6  5
+ 2  0 12  3  7

day04/data/case01.txt

@@ -0,0 +1,601 @@
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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