This script calculates and generates all combinations of array elements for n variables with a k class. The script takes an array elements and returns another array with values set to the specified type of combination of elements.The combination types implemented by this class are: - Pn - Pn(k) - Dn,k - D'n,k - Cn,k - C'n,k

Alternate text is meant to extract a random text string from a string that defines a set of possible combinations of words. It is supposed to be used to generate variations of a message that can be refreshed dynamically.Just try this combination definition "(hello|bye(world|(sweet|)home|moon)" to see the multiple variations of text strings that the script generates.

Combinatorics contains some useful statistical functions to make combinatorial statictic calculations like dispositions and combinations of objects.As an interesting use of the class there is a subclass to find the best path, both if you have to visit a certain number of cities and if you have to touch a certain number of nodes in a network.