19 lines
409 B
Ruby
19 lines
409 B
Ruby
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squares = Enumerator.new{|y| (0..).each{|n| y << 2**n} }
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squares5 = Enumerator.new{|y| (0..).each{|n| y << 2**n*5} }
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pyth_quad = Enumerator.new do |y|
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n = squares.next
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m = squares5.next
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loop do
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if n < m
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y << n
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n = squares.next
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else
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y << m
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m = squares5.next
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end
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end
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end
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# this takes less than a millisecond
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puts pyth_quad.take_while{|n| n <= 1000000000}.join(" ")
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