[2019][ruby][7.b]

master
Alpha Chen 5 years ago
parent 631b2642b4
commit a28f8de0b2

@ -2,11 +2,26 @@ require_relative "computer"
program = ARGF.read program = ARGF.read
puts (0..4).to_a.permutation.map {|phase_settings| p (5..9).to_a.permutation.map {|phase_settings|
amplifiers = Array.new(5) { Computer.from(program) } amplifiers = Array.new(5) { Computer.from(program) }
amplifiers.zip(phase_settings).inject(?0) {|i, (a, ps)|
output = StringIO.new pipes = Array.new(5) { IO.pipe }
a.run(StringIO.new("#{ps}\n#{i}"), output)
output.string # input phase settings
}.to_i pipes.zip(phase_settings).each do |(_, w), ps|
w.puts(ps)
end
# first 0 signal
pipes.first.last.puts(?0)
ios = pipes.cycle.each_cons(2).take(5).map {|(r, _), (_, w)| [r, w] }
ts = amplifiers.zip(ios).map {|(a, (i, o))|
Thread.new { a.run(i, o) }
}
ts.each(&:join)
thrusters_input = ios.first.first
thrusters_input.gets.to_i
}.max }.max

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