Java Factorial factorial(int n)

Description

factorial

License

Open Source License

Declaration

private static double factorial(int n) 

Method Source Code

//package com.java2s;
/*/*from  w  w  w  .j  av  a2  s  .c  om*/
 *   EuroCarbDB, a framework for carbohydrate bioinformatics
 *
 *   Copyright (c) 2006-2009, Eurocarb project, or third-party contributors as
 *   indicated by the @author tags or express copyright attribution
 *   statements applied by the authors.  
 *
 *   This copyrighted material is made available to anyone wishing to use, modify,
 *   copy, or redistribute it subject to the terms and conditions of the GNU
 *   Lesser General Public License, as published by the Free Software Foundation.
 *   A copy of this license accompanies this distribution in the file LICENSE.txt.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *   or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 *   for more details.
 *
 *   Last commit: $Rev: 1210 $ by $Author: glycoslave $ on $Date:: 2009-06-12 #$  
 */

public class Main {
    private static double factorial(int n) {
        return binomialCoefficient(n, 1);
    }

    private static double binomialCoefficient(int n, int k) {
        double ret = 1;
        for (int i = n; i > k; i--)
            ret *= i;
        return ret;
    }
}

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