Random Binary Sequence Generator
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Sam
le 3 Fév 2014
Réponse apportée : abderrahim rhoulami
le 19 Sep 2022
I need to generate a Random Binary Sequence of 1x10000 size. Purely Random 1's and 0's.
I had implemented it as follows and it does the job with no complaints.
rand_bin = round(0.75*rand(1,10000));
However, are there any Efficient Implementations for this, probably a specific function which was built for this or something?
Thanks.
4 commentaires
Roger Stafford
le 3 Fév 2014
Modifié(e) : Roger Stafford
le 3 Fév 2014
I assumed that was what was wanted. Otherwise round(rand(1,10000)) is more efficient.
Réponse acceptée
Wayne King
le 3 Fév 2014
use randi()
x = randi([0 1],10000,1);
3 commentaires
Nitin SHrinivas
le 1 Août 2021
If we want to generate all unique coloums or rows is there a function to do so? any suggestions
Plus de réponses (4)
Jos (10584)
le 3 Fév 2014
Here are two suggestions:
% with 0 <= P <=1
RBS = rand(1,N) < P
% will give roughly a proportion of P ones among N values
% exactly M ones among N values
RBS = false(1,N) ;
RBS(1:M) = true ;
RBS = RBS(randperm(numel(RBS)
Note: I prefer to store the output as logical arrays (true/false = 1/0) that occupy less memory than double arrays.
2 commentaires
Jos (10584)
le 6 Fév 2014
That's a poor reason to use a one-lined solution ;-)
Long but efficient and readable code is much preferred over short and efficient but unreadable code.
(btw rand(1,N)<P is both short and readable)
Ayushi Dadhich
le 3 Nov 2020
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/401549/image.png)
1 commentaire
Siddharth Bhalerao
le 28 Déc 2020
This space is not for homework/assignments. Ask a specific question. Explain what you have done for the problem you are facing, then ask the question. There are so many experts here, you will definitely get the answers.
Therefore, I will suggest you to update the question and explain the problem clearly.
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