Advent of Code 2019 - Day 2

1.rb

file = File.read('input.txt')
memory = file.split(",").map(&:to_i)

finished = false
i = 0

while finished == false do
  num = memory[i]
  if [1,2].include?(num)
    index = i+3
    line = memory[i..index]

    solution = if line[0] == 1
      memory[line[1]] + memory[line[2]]
    elsif line[0] == 2
      memory[line[1]] * memory[line[2]]
    end

    position = line[3]

    memory[position] = solution
    i = index
  elsif num == 99
    finished = true
  end
  i = i+1
end

puts memory[0]

2.rb

file = File.read('input.txt')
memory = file.split(",").map(&:to_i)
attempts = 0
nouns = (0..99).to_a
verbs = (0..99).to_a
answer = 0

while answer != 19690720
  finished = false
  i = 0

  noun = nouns.sample.to_i
  verb = verbs.sample.to_i

  memory[1] = noun
  memory[2] = verb

  puts "trying #{memory[1]} and #{memory[2]} - Attempt #{attempts}"

  while finished == false do
    num = memory[i]
    if [1,2].include?(num)
      index = i+3
      line = memory[i..index]

      solution = if line[0] == 1
        memory[line[1]] + memory[line[2]]
      elsif line[0] == 2
        memory[line[1]] * memory[line[2]]
      end

      position = line[3]

      memory[position] = solution
      i = index
    elsif num == 99
      finished = true
    end
    i = i+1
  end

  answer = memory[0]

  memory = file.split(",").map(&:to_i)
  attempts = attempts + 1
end

answer = 100 * noun + verb

puts "Answer = #{answer}"