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24 lines
646 B
24 lines
646 B
3 years ago
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bits = ARGF.read.split("\n").map(&:chars)
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gamma = bits.transpose.map {|a| a.tally.max_by(&:last).first }.join
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epsilon = bits.transpose.map {|a| a.tally.min_by(&:last).first }.join
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p gamma.to_i(2) * epsilon.to_i(2)
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oxy = bits.clone
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(0..oxy.first.length).each do |i|
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b = oxy.transpose.map {|a| a.tally.sort.reverse.max_by(&:last).first }[i]
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oxy.select! {|x| x[i] == b }
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break if oxy.length == 1
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end
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oxy = oxy.join.to_i(2)
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co2 = bits.clone
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(0..co2.first.length).each do |i|
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b = co2.transpose.map {|a| a.tally.sort.min_by(&:last).first }[i]
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co2.select! {|x| x[i] == b }
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break if co2.length == 1
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end
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co2 = co2.join.to_i(2)
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p oxy * co2
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