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2021.19.1 don't keep list and mapset of resolved

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Sloane Perrault 2022-09-21 09:19:54 -04:00
parent dc05a1ed2b
commit 685f397493
1 changed files with 9 additions and 9 deletions
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18
2021/lib/2021/19.ex
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@ -34,23 +34,23 @@ aoc 2021, 19 do
def union(map_sets), do: Enum.reduce(map_sets, MapSet.new(), &MapSet.union/2) def union(map_sets), do: Enum.reduce(map_sets, MapSet.new(), &MapSet.union/2)
def align_scanners([start | rest]) do def align_scanners([start | rest]) do
align_scanners(rest, [start]) align_scanners(rest, start)
end end
def align_scanners(scanners, included, skipped \\ []) def align_scanners(scanners, aligned, skipped \\ [])
def align_scanners([], included, []), do: union(included) def align_scanners([], aligned, []), do: aligned
def align_scanners([], included, skipped) do def align_scanners([], aligned, skipped) do
IO.puts("") IO.puts("")
align_scanners([union(included) | skipped]) align_scanners([aligned | skipped])
end end
def align_scanners([canidate | rest], included, skipped) do def align_scanners([canidate | rest], aligned, skipped) do
case union(included) |> attempt_alignment(canidate) do case aligned |> attempt_alignment(canidate) do
:miss -> :miss ->
IO.write(".") IO.write(".")
align_scanners(rest, included, [canidate | skipped]) align_scanners(rest, aligned, [canidate | skipped])
{:ok, transformed} -> {:ok, transformed} ->
IO.write("+") IO.write("+")
align_scanners(rest, [transformed | included], skipped) align_scanners(rest, MapSet.union(transformed, aligned), skipped)
end end
end end