aoc-2018/2.exs
2018-12-03 18:42:23 +11:00

46 lines
1.2 KiB
Elixir

{:ok, content} = File.read("input-2")
content = content
|> String.split("\n", trim: true)
|> Enum.map(fn n -> String.graphemes(n) end)
count2 = 0
count3 = 0
sum2 = for line <- content do
Enum.reduce(line, %{}, fn char, acc ->
Map.put(acc, char, (acc[char] || 0)+ 1)
end)
|> Map.values
end
sum3 = for sum <- sum2 do
Enum.filter(sum, fn x -> x == 3 end) # need to split and count occurance of 2 and 3 seperately
|> (fn x -> [ 0 | x] end).() #so the accumulator starts with 0
|> Enum.reduce(fn _, acc -> acc + 1 end) #if x == 2 do acc + 1 end end)
end
sum3= sum3
|> Enum.sum
|> IO.inspect
sum2 = sum2
|> Enum.filter(fn x -> Enum.member?(x, 2) end)# need to split and count occurance of 2 and 3 seperately
|> (fn x -> [ 0 | x] end).() #so the accumulator starts with 0
|> Enum.reduce(fn _, acc -> acc + 1 end) #if x == 2 do acc + 1 end end)
sum2 = sum2
|> IO.inspect
sum1 = sum3 * sum2
IO.puts(sum1)
#IO.puts(count2)
#IO.puts(count3)
# File.stream!("input-2")
# |> Stream.map(&String.trim/1)
# |> Stream.map(fn n -> String.graphemes(n) end)
# |> Enum.reduce(%{}, fn char, acc ->
# Map.update(acc, char, 1, &(&1 + 1))
# end)
# |> IO.puts