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B

BinomialCoefficient - Class in org.apache.commons.numbers.combinatorics

Representation of the binomial coefficient.

BinomialCoefficientDouble - Class in org.apache.commons.numbers.combinatorics

Representation of the binomial coefficient, as a double.

C

Combinations - Class in org.apache.commons.numbers.combinatorics

Utility to create combinations (n, k) of k elements in a set of n elements.

comparator() - Method in class org.apache.commons.numbers.combinatorics.Combinations

Creates a comparator.

create() - Static method in class org.apache.commons.numbers.combinatorics.FactorialDouble

Deprecated.

Since 1.1 this functionality has been replaced with Factorial.doubleValue(int).

This class no longer supports a cache. This method returns a reference to a single instance.

create() - Static method in class org.apache.commons.numbers.combinatorics.LogFactorial

Creates an instance with no precomputed values.

D

doubleValue(int) - Static method in class org.apache.commons.numbers.combinatorics.Factorial

Computes the factorial of n.

F

Factorial - Class in org.apache.commons.numbers.combinatorics

Factorial of a number.

FactorialDouble - Class in org.apache.commons.numbers.combinatorics

Deprecated.

Since 1.1 this functionality has been replaced with Factorial.doubleValue(int). Factorial of a number.

G

getK() - Method in class org.apache.commons.numbers.combinatorics.Combinations

Gets the number of elements in each combination.

getN() - Method in class org.apache.commons.numbers.combinatorics.Combinations

Gets the size of the set from which combinations are drawn.

I

iterator() - Method in class org.apache.commons.numbers.combinatorics.Combinations

Creates an iterator whose range is the k-element subsets of {0, ..., n - 1} represented as int[] arrays.

L

LogBinomialCoefficient - Class in org.apache.commons.numbers.combinatorics

Natural logarithm of the binomial coefficient.

LogFactorial - Class in org.apache.commons.numbers.combinatorics

Class for computing the natural logarithm of the factorial of a number.

O

of(int, int) - Static method in class org.apache.commons.numbers.combinatorics.Combinations

Create an instance.

org.apache.commons.numbers.combinatorics - package org.apache.commons.numbers.combinatorics

Combinatorics.

S

Stirling - Class in org.apache.commons.numbers.combinatorics

Computation of Stirling numbers.

stirlingS1(int, int) - Static method in class org.apache.commons.numbers.combinatorics.Stirling

Returns the signed Stirling number of the first kind, "s(n,k)".

stirlingS2(int, int) - Static method in class org.apache.commons.numbers.combinatorics.Stirling

Returns the Stirling number of the second kind, "S(n,k)", the number of ways of partitioning an n-element set into k non-empty subsets.

V

value(int) - Static method in class org.apache.commons.numbers.combinatorics.Factorial

Computes the factorial of n.

value(int) - Method in class org.apache.commons.numbers.combinatorics.FactorialDouble

Deprecated.

Since 1.1 this functionality has been replaced with Factorial.doubleValue(int).

The result of calling this method is the same as calling the Factorial.doubleValue(int).

value(int) - Method in class org.apache.commons.numbers.combinatorics.LogFactorial

Computes \( log_e(n!)

value(int, int) - Static method in class org.apache.commons.numbers.combinatorics.BinomialCoefficient

Computes the binomial coefficient.

value(int, int) - Static method in class org.apache.commons.numbers.combinatorics.BinomialCoefficientDouble

Computes the binomial coefficient.

value(int, int) - Static method in class org.apache.commons.numbers.combinatorics.LogBinomialCoefficient

Computes the logarithm of the binomial coefficient.

W

withCache(int) - Method in class org.apache.commons.numbers.combinatorics.FactorialDouble

Deprecated.

Since 1.1 this functionality has been replaced with Factorial.doubleValue(int).

This class no longer supports a cache. This method returns a reference to the same object.

withCache(int) - Method in class org.apache.commons.numbers.combinatorics.LogFactorial

Creates an instance with the specified cache size.

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