Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

Numbers and strings

Posted on 2011-03-16
4
Medium Priority
?
412 Views
Last Modified: 2012-05-11
I have a number like 2635 that will be drawn from a db.  I need to create a random 4 digit number and have it put before the number.  I then need to put a different 4 digit number at the end.  So they would all be strung together like 374226358374.  

Then, I would need to break this number apart and isolate the original number.

Thanks
0
Comment
Question by:Rush_2112
4 Comments
 
LVL 3

Accepted Solution

by:
sajayc earned 2000 total points
ID: 35152953
Hi,

This will just involve a couple of variables.

<cfset originalnum = query.number> <!--- This is the value from database  --->
<cfset randbefore = randrange(1000,9999)>
<cfset randafter = randrange(1000,9999)>
<cfset entirenumber = randbefore & originalnum & randafter>
<cfoutput>#entirenumber#</cfoutput>

The variables above will have everything seperate.

If you need to pull your orginal number out of the entire string, this code will do it.
<cfset extractnum = mid(entirenumber, 5, 4)> <!--- entirenum is the variable of the full number  --->
<cfoutput>#extractnum#</cfoutput>

0
 
LVL 53

Expert Comment

by:_agx_
ID: 35153411
(no points)

The technique above will probably be fine for your purposes.  But note RandRange generates pseudo random numbers. So if you have other requirements, like unique numbers, etc... that's something to keep in mind.

0
 
LVL 11

Expert Comment

by:Brijesh Chauhan
ID: 35153720
Another thing is that will your number be always of 4 digits like you have mentioned '2635' or the digits can change, this is because you need to get the number back,


if your number digit change, then you would need to store the number of digits in your orginal number somewhere and use the count in the code posted by @sajayc
<cfset originalNumber = '23456' />
<cfset count = len(originalNumber) />
<!--- ADD RANDOM NUMBERS --->
// code from @sajayc
<!-- EXTRACT , just add the count in there instead of 4 --->
<cfset extractnum = mid(entirenumber, 5, count)> <!--- entirenum is the variable of the full number  --->
<cfoutput>#extractnum#</cfoutput>

Also, as pointed by @_agx_ above, uniquness and randomness are 2 different things, unique is putting a restriction on random generation to have something not already generated.

0
 
LVL 1

Author Closing Comment

by:Rush_2112
ID: 35159426
Worked perfectly!  Thanks!  And thank you to everyone else who commented
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article  is about submitting  form through  ColdFusion.Ajax.submitForm to the action page and send a response back in JSON format which later can be decoded using ColdFusion.JSON.decode. By this way you can avoid the usual page refresh for subm…
I spent nearly three days trying to figure out how incorporate OAuth in Coldfusion for the Eventful API. Hopefully, this article will allow Coldfusion Programmers to buzz through the API when they need to. Basically, what this script does is authori…
Is your OST file inaccessible, Need to transfer OST file from one computer to another? Want to convert OST file to PST? If the answer to any of the above question is yes, then look no further. With the help of Stellar OST to PST Converter, you can e…
Enter Foreign and Special Characters Enter characters you can't find on a keyboard using its ASCII code ... and learn how to make a handy reference for yourself using Excel ~ Use these codes in any Windows application! ... whether it is a Micr…

578 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question