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  1. class E286 {
  2. 	public static void main (String[] args) {
  3. 		rFactorial(3628800);
  4. 		rFactorial(479001600);
  5. 		rFactorial(6);
  6. 		rFactorial(18);
  7. 	}
  8.  
  9. 	private static void rFactorial(float in) {
  10. 		int ori = (int) in;
  11. 		int i;
  12.  
  13. 		for (i = 2; in > 1; i++)
  14. 			in /= i;
  15.  
  16. 		if (in == 1)
  17. 			System.out.printf("%d = %d!\n", ori, i-1);
  18. 		else
  19. 			System.out.printf("%d NONE\n", ori);
  20. 	}
  21. }
Success #stdin #stdout 0.04s 711168KB
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stdin
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Standard input is empty
stdout
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3628800 = 10!
479001600 = 12!
6 = 3!
18 NONE
https://ideone.com/XzCYFY
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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