20 lines
409 B
Ruby
Executable File
20 lines
409 B
Ruby
Executable File
#!/bin/env ruby
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require 'pry'
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numbers = File.read('./input').split(',')
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numbers.map!(&:to_i)
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runs = 30000000
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runs.times do |i|
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next if i < numbers.size
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num = numbers[-1]
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prev_turn = numbers[..-2].reverse.find_index(num)
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if prev_turn == nil
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numbers.push(0)
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else
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new_num = (i - 1) - (numbers.size - 2 - prev_turn)
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numbers.push(new_num)
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end
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end
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puts numbers[-1] |