How to generate a list of random ID which can later be used instead of participant name?

11 views (last 30 days)
Hello every one,
I want to programm a code in which I can generate a list of random ID to use as test person ID later during my experiments.
- Each ID has to be consisted of 2 letters as well as 2 digits (e.g., 2g9e)
I would be so thankful if somebody could advise me how to do so.
Best regards,
Parishad

Accepted Answer

Paul Hoffrichter
Paul Hoffrichter on 4 Mar 2021
Due to the cyclist remark about homework, I am just starting the script. It leaves out certain patterns like 'a9a9' since it is just using combinations. How you rearrange the unique patterns is up to you.
a_26_2 = nchoosek('a':'z',2);
n_10_2 = nchoosek('0':'9',2);
a_26_2f = [a_26_2; fliplr(a_26_2)]; % gives 650 2 letter unique alpha strings
n_10_2f = [n_10_2; fliplr(n_10_2)]; % gives 90 2 letter unique numeric strings
By merging all possibilities, you can get 650*90 (almost 60,000) unique 4 char id's.
  2 Comments
Walter Roberson
Walter Roberson on 4 Mar 2021
We are not told that letters are restricted to lowercase.
We are also not told to avoid easily confused possibilities such as l0lO

Sign in to comment.

More Answers (1)

David Hill
David Hill on 4 Mar 2021
Yes, a strictly numerical format would be much easier.
a=[randperm(10,2)+47;randperm(26,2)+96];
a=char(a(:)');
  3 Comments
Walter Roberson
Walter Roberson on 4 Mar 2021
We are not promised that the order of digits and letters is fixed, just that there are two of each.

Sign in to comment.

Categories

Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!