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perl scripting perl scripting even if you're already inside methodA() you can call methodA(). The easiest way I can think of to explain recursion is to look at a simple acronym, GNU. The GNU project, among other things, is trying to produce free versions of the Unix operating system and many Unix tools, such as lex, yacc, and cc. One minor problem with this effort is that the name Unix is trademarked so the GNU project can't use it. Hence, instead of Unix, we have GNU, where GNU stands for "Gnu's Not Unix.

perl scripting " The definition of GNU refers to itself; that is, it's recursive. So what is GNU? One level deeper it's "(Gnu's Not Unix)'s Not Unix." One level deeper still, it becomes "((Gnu's Not Unix)'s Not Unix)'s Not Unix." And so on, ad infinitum. It's like standing between a pair of mirrors.

perl scripting The images just fade off into the distance with no clear end in sight. In computer programming recursion is achieved by allowing a method to call itself.You probably already see one problem with recursion. Where does it all end? In fact when you write recursive methods you have to be careful to include stopping conditions. Although Java doesn't put any particular limits on the depth to which you can expand a recursion, it is very possible to have a run-away recursion eat up all the memory in your computer.

perl scripting Let's look at an example. n! (pronounced "En-factorial") is defined as n times n-1 times n-2 times n-3 ... times 2 times 1 where n is a positive integer.

perl scripting

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perl scripting