Browse Source

Clean up day 7

master
Shadowfacts 2 years ago
parent
commit
0f5e7f7907
Signed by: shadowfacts GPG Key ID: 94A5AB95422746E5
  1. 45
      lib/day7/day7.ex

45
lib/day7/day7.ex

@ -14,40 +14,11 @@ defmodule Day7 do
end
def test_inputs(digits) do
Enum.reduce(digits, 0, &run_amplifier/2)
end
def run_amplifier(phase_setting, prev_output) do
program = File.read!("lib/day7/input.txt") |> String.trim()
# program = "3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0"
# program = "3,23,3,24,1002,24,10,24,1002,23,-1,23,101,5,23,23,1,24,23,23,4,23,99,0,0"
# program =
# "3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0"
program =
program
|> String.split(",")
|> Enum.map(&String.to_integer/1)
parent = self()
pid =
spawn(fn ->
Day5.run(program, parent)
end)
receive do
{:in, ^pid} -> send(pid, {:in, phase_setting})
end
receive do
{:in, ^pid} -> send(pid, {:in, prev_output})
end
receive do
{:out, ^pid, val} ->
val
end
Enum.reduce(digits, 0, fn phase_setting, prev_output ->
phase_setting
|> start_amplifier()
|> amplifier_step(prev_output)
end)
end
def permutations([]), do: [[]]
@ -74,6 +45,12 @@ defmodule Day7 do
def start_amplifier(phase_setting) do
program = File.read!("lib/day7/input.txt") |> String.trim()
# part 1 examples:
# program = "3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0"
# program = "3,23,3,24,1002,24,10,24,1002,23,-1,23,101,5,23,23,1,24,23,23,4,23,99,0,0"
# program =
# "3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0"
# part 2 examples:
# program =
# "3,26,1001,26,-4,26,3,27,1002,27,2,27,1,27,26,27,4,27,1001,28,-1,28,1005,28,6,99,0,0,5"
# program =

Loading…
Cancel
Save