org.jgrapht.util.MathUtil Maven / Gradle / Ivy
/*
* (C) Copyright 2005-2017, by Assaf Lehr and Contributors.
*
* JGraphT : a free Java graph-theory library
*
* This program and the accompanying materials are dual-licensed under
* either
*
* (a) the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation, or (at your option) any
* later version.
*
* or (per the licensee's choosing)
*
* (b) the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation.
*/
package org.jgrapht.util;
/**
* Math Utilities.
*
* @author Assaf Lehr
* @since May 30, 2005
*/
public class MathUtil
{
/**
* Calculate the factorial of n.
*
* @param n the input number
* @return the factorial
*/
public static long factorial(int n)
{
long multi = 1;
for (int i = 1; i <= n; i++) {
multi = multi * i;
}
return multi;
}
}
// End MathUtil.java