AOC 2025 day 1

01.cr

wheel = (0..99).to_a
wheel.rotate!(50)

data = File.read("input.txt").chomp.split("\n")

puts "Part 1"

part_1_hits = 0
part_1_wheel = wheel.dup
current_position = part_1_wheel.first

data.each do |turn|
  direction, clicks = turn[0].to_s, turn[1..].to_i

  adjustment = direction == "L" ? -clicks : clicks

  current_position = part_1_wheel.rotate!(adjustment).first

  part_1_hits += 1 if current_position == 0
end

puts "=> #{part_1_hits}"

puts "Part 2"
part_2_wheel = wheel.dup
current_position = part_2_wheel.first

part_2_hits = 0
part_2_passes = 0

data.each do |turn|
  direction, clicks = turn[0].to_s, turn[1..].to_i

  adjustment = direction == "L" ? -1 : 1

  clicks.times do |i|
    current_position = part_2_wheel.rotate!(adjustment).first
    break if i == clicks - 1
    part_2_passes += 1 if current_position == 0
  end

  part_2_hits += 1 if current_position == 0
end

puts "=> #{part_2_hits + part_2_passes}"