18 lines
293 B
Ruby
18 lines
293 B
Ruby
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require_relative 'euler'
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def reverse_and_add(n)
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n + Euler.from_digit_list(n.to_digit_list.reverse)
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end
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def lychrel_number?(n)
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50.times do
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n = reverse_and_add(n)
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return false if Euler.palindrome?(n)
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end
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true
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end
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def solution
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(1..10000).count { |x| lychrel_number?(x) }
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end
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