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  1. def factorial(n)
  2.   (1..n).inject(1, :*)
  3. end
  4.  
  5. def sum_of_digits(num)
  6.   num.to_s.chars.map(&:to_i).sum
  7. end
  8.  
  9. while line = gets
  10.   n = line.to_i
  11.   break if n == 0
  12.   puts sum_of_digits(factorial(n))
  13. end
  14.  
Success #stdin #stdout 0.01s 8032KB
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https://ideone.com/waFwkY
language:
Ruby (ruby 2.5.5)
created:
3 days ago
visibility:
public

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