17 lines
454 B
Ruby
17 lines
454 B
Ruby
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descr=%{
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The decimal number, 585 = 1001001001_(2) (binary), is palindromic in both bases.
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Find the sum of all numbers, less than one million, which are palindromic in base 10 and base 2.
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(Please note that the palindromic number, in either base, may not include leading zeros.)
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}
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sum=0
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(0..1000000).each do |n|
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if n.to_s == n.to_s.reverse && n.to_s(2) == n.to_s(2).reverse
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sum+=n
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puts n
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end
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end
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puts "\nSum: #{sum}"
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