org.ojalgo.function.special

Class CombinatorialFunctions

java.lang.Object

org.ojalgo.function.special.CombinatorialFunctions

public abstract class CombinatorialFunctions
extends Object

https://reference.wolfram.com/language/tutorial/CombinatorialFunctions.html

Author:

apete

Method Summary

Modifier and Type	Method and Description
static double	factorial(int arg)
static int	partitions(int n, int[] k)
static int	permutations(int n)
static int	subsets(int n, int k)
static int	variations(int n, int k)

Methods inherited from class java.lang.Object

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

Method Detail

factorial

public static double factorial(int arg)

partitions

public static int partitions(int n,
                             int[] k)

Parameters:

n - The number of elements in the set

k - A vector of subset sizes the sum of which must equal the size of the full set

Returns:

The number of ways the set can be partioned in to subsets of the given sizes

permutations

public static int permutations(int n)

Parameters:

n - The number of elements in the set

Returns:

The number of permutations of the set

subsets

public static int subsets(int n,
                          int k)

Parameters:

n - The number of elements in the set

k - The number of elements in the subset

Returns:

The number of subsets to the set

variations

public static int variations(int n,
                             int k)

Parameters:

n - The number of elements in the set

k - The size of the tuple

Returns:

The number of ordered k-tuples (variations) of the set