7 lines
193 B
Ruby
7 lines
193 B
Ruby
doors = [false] * 100
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100.times do |i|
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(i ... doors.length).step(i + 1) do |j|
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doors[j] = !doors[j]
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end
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end
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puts doors.map.with_index(1){|d,i| "Door #{i} is #{d ? 'open' : 'closed'}."}
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