Ramdom number without repetation

Posted by Srinu0411 under ASP.NET on 2/25/2010 | Views : 2732 | Status : [Member] | Replies : 5

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hi

i want to pick questions ramdomly from set of questions,i tied in this way but some questions r repeating

Random rnd = new Random();
int i = rnd.Next(0, x);

please tell any budy ramdom number with out repetation

kaja srinivas

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Posted by: Abhi2434 on: 2/25/2010 [Member] [Microsoft_MVP] [MVP] Silver

0	Use a list of all random number already generated. Say List<int> randquestionalreadyserved = new List(); Now for every random number, put it in the list and check the list before you decide. So your code will look like : Random md = new Random(); while(true){ int rnd = md.Next(0,x); if(!randquestionalreadyserved.Contains(rnd)) { randquestionalreadyserved.Add(rnd); break; } } I hope this would help you. Cheers www.abhisheksur.com Srinu0411, if this helps please login to Mark As Answer. \| Alert Moderator

Use a list of all random number already generated.

Say

List<int> randquestionalreadyserved = new List();

Now for every random number, put it in the list and check the list before you decide. So your code will look like :

Random md = new Random();

while(true){

int rnd = md.Next(0,x);

if(!randquestionalreadyserved.Contains(rnd))

{

    randquestionalreadyserved.Add(rnd);

    break;

}

}

I hope this would help you. Cheers

www.abhisheksur.com

Srinu0411, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Nishithraj on: 2/25/2010 [Member] Bronze

0	Check the threads in the following link. It will clear your doubts http://www.codeproject.com/answers/59032/How-to-avoid-duplicate-random-questions.aspx Mark this as answer, if it is..... With regards Nishithraj Narayanan Srinu0411, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Srinu0411 on: 2/25/2010 [Member] Starter

0	Thanks kaja srinivas Srinu0411, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Abhi2434 on: 2/27/2010 [Member] [Microsoft_MVP] [MVP] Silver

0	If it really helped u, please mark it as Resolved. www.abhisheksur.com Srinu0411, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Srinu0411 on: 2/28/2010 [Member] Starter

0	Thanks i got ramdom number with out repetation kaja srinivas Srinu0411, if this helps please login to Mark As Answer. \| Alert Moderator

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