hirondelle.formula.function.builtin
Class Combination

Object
  hirondelle.formula.function.builtin.Combination

All Implemented Interfaces:

Function

public final class Combination
extends Object
implements Function

combination(n,k): the number of combinations, selecting k of n. Returns the number of distinct ways you can select k items from an underlying set of n items.

Constructor Summary

Combination()

Method Summary

Decimal

calculate(Decimal... aArgs) Takes two parameters n and k (in that order).

Methods inherited from class Object

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

Constructor Detail

Combination

public Combination()

Method Detail

calculate

public Decimal calculate(Decimal... aArgs)

Takes two parameters n and k (in that order). Both are integers greater than 0, with n >= k.

Specified by:

calculate in interface Function

Parameters:

aArgs - 0 or more arguments to the function.