perl scripting

perl scripting resources brought to you by aldenhosting.com

perl scripting

perl scripting information is available by clicking above

Since 1998, Alden Hosting is a provider of business-class Web hosting to small- and medium-sized businesses, providing professional, efficient, and reliable services. We provide everything you need to get your business on the Internet. We make it easy and affordable. Alden Hosting's feature-rich hosting plans and excellent 7 days a week toll-free customer support empower you to efficiently build a Web business that will grow with your changing needs.

Site Map
perl scripting perl scripting 0! is defined as 1. As you see n! = n time (n-1)!. This lends itself to recursive calculation, as in the following method:public static long factorial (int n) { if (n == 0) { return 1; } else { return n*factorial(n-1); }} Something to think about: What happens if a negative integer is passed into the factorial method? For example suppose you ask for factorial(-1). Then you get the following chain of calls: -1 * -2 * -3 * -4 * ..

perl scripting .. If you're lucky your program may unexpectedly pop into the positive numbers and count down to zero. If you're not, your program will crash with a StackOutOfMemoryError. Stopping conditions are very important.

perl scripting In this case you should check to see if you've been passed a negative integer; and, if you have been, return infinity. (The factorial is a special case of the gamma function for non-negative integers. Although the factorial function is only defined for non-negative integers, the gamma function is defined for all real numbers. It is possible to show that the gamma function is infinite for negative integers.) Java doesn't support infinite values for longs, though, so return the warning value -1 instead.

perl scripting (Java does support infinite values for floats and doubles.) Here's a better recursive factorial method:public static long factorial (int n) { if (n < 0) { return -1; } else if (n == 0) { return 1; } else { return n*factorial(n-1); }}It can be proven mathematically that all recursive algorithms have non-recursive counterparts. For instance the factorial method could have been written non-recursively like this:public static long factorial (int n) { long result = 1; for (int i = 1; i <= n; i++) { result *= i; } return result;}The non-recursive equivalent in this problem is straight-forward, but sometimes the non-recursive counterpart to a recursive algorithm isn't at all obvious. To see that one always exists, note that at the machine level of the computer, there's no such thing as recursion and that everything consists of values on a stack. Therefore even if you can't find a simpler way to rewrite the algorithm without recursion, you can always use your own stack instead of the Java stack.

perl scripting

Web Hosting Links Portal
Web Hosting JSP Hosting Tomcat Hosting MySQL Hosting servlets Hosting
Web Site Hosting JSP Hosting Tomcat Hosting MySQL Hosting servlets Hosting
JSP Web Hosting JSP Web Hosting
Servlet Web Hosting Servlet Web Hosting
Alden Trading Alden Shoes ebootery Minnetonka Moccasins myMoccasins
Protecting Your Assets Portal
Offshorelaw links Offshorelaw
INTERNET LARGEST NEW CAR BUYING SERVICE
Where You will Find every wedding service you will need
Where You will Find every wedding service you will need
unemployment benefit services
unemployment benefit services unemployment benefit services
Menu Paper Menu Paper
Dancing Waters Dancing Waters

perl scripting