Random Number Generating

  • Thread starter Thread starter Leon
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L

Leon

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 numbers using asp.net?

Plus If you have any coding practice ideas for the above defined project
please share them.

Thanks!
 
Leon said:
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 numbers using asp.net?
Click to expand...

Leon, in .NET you can use the Random class to generate a random number.
See the technical docs at http://tinyurl.com/5b8m4

For your particular problem I'd do the following:

(1) Create an ArrayList with 10 elements, the numbers 1 through 10
(2) In a for loop that iterates 5 times, randomly choose a number, n,
between 1 and the size of the ArrayList.
(3) Your randomly chosen number is the number at element n in the
ArrayList. Remove this element from the ArrayList and go back to step (2).

This approach guarantees you 5 unique random numbers with 5 tries. hth

--

Scott Mitchell
(e-mail address removed)
http://www.4GuysFromRolla.com

* When you think ASP.NET, think 4GuysFromRolla.com!
 
See System.Math.Random in the class documentation (though I don't know if a
number is really "random" if you require it not to be the same than a
previous number).

You could have an array that tells if this partiuclar number is already
taken allowing to pick a new random number. You could use use a list if you
have a bigger interval (so that you can browse already picked numbers rather
than to have a boolean for each possible number).

Patrice
 
I want to thank all you guys for your responses! But out all the responses
which is the best way to solve my problem?
 
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