Hi,<BR><BR>I'm currently coding a function in Java that will find the number of possible combinations for a string. I've run into a problem in to a problem with regards to both speed and memory usage.

Community driven content discussing all aspects of software development from DevOps to design patterns. The factorial of 5 is 120. The factorial of 10 is 3,628,800. Programmers can take one of two ...

Reversible programming languages and computing represent a forward‐looking paradigm in which every computational operation is designed to be invertible. In these systems, each transition from one ...

In this article, we study some new characterizations of primitive recursive functions based on restricted forms of primitive recursion, improving the pioneering work of R. M. Robinson and M. D.