Random Number Generator

Hello All,

I have been charged with coming up with a way to raffle an iPad2 at a charity event. The raffle participants are all members of the non-profit with member id#'s. Instead of putting paper in a bowl I thought about using a random number generator to produce the winning member id. I thought that Mat-Lab would be a useful tool for doing this. Any thoughts??

Answer 1

[Paulo Silva]

RandStream.setDefaultStream(RandStream('mt19937ar','seed',sum(100*clock)));
n=10; %number of ids
randi([1 n])

[Christopher]

Thank you Paulo. There are ~130 different 5-digit id#'s. In this case my n=130. Do I need to code the id#s as integers.

ID 1234556 =1

ID 7891011 =2

Then I would know which ID won the raffle. Is the about right?

[Paulo Silva]

That would do it but it's too much work and I can't think any other way besides getting another set of consecutive IDs for each participant.

Answer 2

[Fangjun Jiang]

help randint help rand

round(100*rand(5,1))

enter at http://www.mathworks.com/matlabcentral/answers/9073-what-is-your-unusual-use-of-matlab