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  1. import java.math.BigInteger;
  2.  
  3. class Main
  4. {
  5. 	public static void main (String[] args)
  6. 	{
  7. 		System.out.println( binomial(4,2) );
  8. 		System.out.println( binomial(133,71) );
  9. 	}
  10.  
  11. 	static BigInteger binomial(int N, int K) {
  12. 	    BigInteger ret = BigInteger.ONE;
  13. 	    for (int k = 0; k < K; k++) {
  14. 	        ret = ret.multiply(BigInteger.valueOf(N-k))
  15. 	                 .divide(BigInteger.valueOf(k+1));
  16. 	    }
  17. 	    return ret;
  18. 	}
  19. }
Success #stdin #stdout 0.1s 320256KB
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6
555687036928510235891585199545206017600
https://ideone.com/QQdrGw
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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