lima.mathematical.utilities
Class Combinatorial

java.lang.Object
  |
  +--lima.mathematical.utilities.Combinatorial

public class Combinatorial

extends java.lang.Object

A class to provide combinatorial integer arithmetic

Constructor Summary

Combinatorial()

Method Summary

static int	combination(int n, int p) Calulation the ways of choosing p objects from n objects
static long	factorial(int n) Calculate the factorial of an integer

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Combinatorial

public Combinatorial()

Method Detail

factorial

public static long factorial(int n)

Calculate the factorial of an integer

Parameters:

n - - the integer who's factorial is returned

combination

public static int combination(int n,
                              int p)

Calulation the ways of choosing p objects from n objects

Parameters:

n - - the size of the set we are choosing object from

p - - the number of elements we wish to choose