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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class Ideone
  8. {
  9. 	public static interface Factorial{
  10. 		public int calculate(int n);
  11. 	}
  12.  
  13. 	public static enum FactorialFactory{
  14. 		INSTANCE;
  15.  
  16. 		public static FactorialFactory getFactoryInstance(){
  17. 			return INSTANCE;
  18. 		}
  19.  
  20. 		public Factorial createNewInstance(){
  21. 			return new Factorial(){
  22. 				@Override
  23. 				public int calculate(int n){
  24. 					if(n < 0){
  25. 						throw new IllegalArgumentException();
  26. 					}
  27. 					int res = 1;
  28. 					while(n>0){
  29. 						res = res*(n--);
  30. 					}
  31. 					return res;
  32. 				}
  33. 			};
  34. 		}
  35. 	}
  36.  
  37. 	public static void main (String[] args)
  38. 	{
  39. 		Factorial fac = FactorialFactory.getFactoryInstance().createNewInstance();
  40. 		for(int k=1;;k++){
  41. 			int factorial = fac.calculate(k);
  42. 			System.out.printf("%02d! = %s%n", k, 
  43. 				String.format("%32s", Integer.toBinaryString(factorial)).replace(' ', '0')
  44. 			);
  45. 			if(factorial == 0){
  46. 				break;
  47. 			}
  48. 		}
  49. 	}
  50. }
Success #stdin #stdout 0.09s 380160KB
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stdin
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Standard input is empty
stdout
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01! = 00000000000000000000000000000001
02! = 00000000000000000000000000000010
03! = 00000000000000000000000000000110
04! = 00000000000000000000000000011000
05! = 00000000000000000000000001111000
06! = 00000000000000000000001011010000
07! = 00000000000000000001001110110000
08! = 00000000000000001001110110000000
09! = 00000000000001011000100110000000
10! = 00000000001101110101111100000000
11! = 00000010011000010001010100000000
12! = 00011100100011001111110000000000
13! = 01110011001010001100110000000000
14! = 01001100001110110010100000000000
15! = 01110111011101110101100000000000
16! = 01110111011101011000000000000000
17! = 11101110110011011000000000000000
18! = 11001010011100110000000000000000
19! = 00000110100010010000000000000000
20! = 10000010101101000000000000000000
21! = 10111000110001000000000000000000
22! = 11100000110110000000000000000000
23! = 00110011011010000000000000000000
24! = 11010001110000000000000000000000
25! = 01111011110000000000000000000000
26! = 10010001100000000000000000000000
27! = 01011000100000000000000000000000
28! = 10101110000000000000000000000000
29! = 10110110000000000000000000000000
30! = 01010100000000000000000000000000
31! = 00101100000000000000000000000000
32! = 10000000000000000000000000000000
33! = 10000000000000000000000000000000
34! = 00000000000000000000000000000000
https://ideone.com/t5YfL8
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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