473,509 Members | 3,039 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

generating a string of unique random numbers

29 New Member
Hey everyone ... happy Friday ...

I need to generate a string of 11 random numbers, (which in itself is not a problem) however, each needs to be unique in value. Building a tree of logical compares is all well and good, but is there an easier way? I did this years ago in Pascal, and I remember the logic, but not the mechanics.

Is there a shortcut in PHP?

I would appreciate any suggestions.

Be well everyone.

Robert
Feb 8 '08 #1
1 1381
MarkoKlacar
296 Recognized Expert Contributor
Hi Robert,

I don't know how good your php skills are but you can work with the same logic(for the tree) in php. What you need is an array and your functions for balancing, sorting etc.

Helps if the functions are recursive (to be clear, they most certainly have to be...).

Is the point of you script to create a tree in the way that I described or are you looking for a finished solution ready for use?

Cheers
Feb 11 '08 #2

Sign in to post your reply or Sign up for a free account.

Similar topics

5
2884
by: Ross MacGregor | last post by:
I have a very simple yet complicated problem. I want to generate a random list of indices (int's) for a container. Let's say I have a container with 10 items and I want a list of 3 random...
5
11302
by: lallous | last post by:
Hello, This code works fine when 'size' is less than 32768 however when size is bigger this function never returns. Can't find out why?! If I break into the code I can see that 'i' is 32768.......
7
7245
by: eric.gagnon | last post by:
In a program randomly generating 10 000 000 alphanumeric codes of 16 characters in length (Ex.: "ZAZAZAZAZAZAZ156"), what would be an efficient way to ensure that I do not generate duplicates? ...
6
5525
by: Poul Møller Hansen | last post by:
I have made a stored procedure, containing this part for generating a unique reference number. SET i = 0; REPEAT SET i = i + 1; SELECT RAND() INTO reference FROM SYSIBM.SYSDUMMY1; SET...
6
1607
by: Leon | last post by:
I need a program that generate 5 non-duplicates random number between 1-10 as string values store in an array. Do anybody know of any good books or websites that explain how to generator random...
1
1920
by: Wally | last post by:
I am after VB.net code for a random number generator that will generate 10 different numbers between 1 and 10 and put them into an array. For example I want the output to be something like...
2
2757
by: Simon Wittber | last post by:
I'm building a web application using sqlalchemy in my db layer. Some of the tables require single integer primary keys which might be exposed in some parts of the web interface. If users can...
1
2651
by: Velhari | last post by:
Hi, I am a beginner. Please tell me, For generating Random Numbers, Initially why we are going for seed method. And another question is that, I want to print unique random number how to print by...
14
7522
by: Steven D'Aprano | last post by:
I have an application that will be producing many instances, using them for a while, then tossing them away, and I want each one to have a unique identifier that won't be re-used for the lifetime...
0
7344
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers,...
0
5652
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
1
5060
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...
0
4730
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and...
0
3216
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The...
0
3203
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
0
1570
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated ...
1
775
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
0
441
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.