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.

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 linux man pages, e.g. man ls, it says -R --recursive. I can see how ls can be recursive, by recursive I mean the proper programming concept. ls could say, "A: list all files in the directory then ...