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  1. def reverse_factorial(num):
  2.     i = 1
  3.     while num > 1:
  4.         i += 1
  5.         num /= i
  6.     if num == 1:
  7.         return i
  8. for num in [3628800, 479001600, 6, 18]:
  9.     print reverse_factorial(num)
Success #stdin #stdout 0s 9024KB
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https://ideone.com/Ilknqx
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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