How to generate a a restricted binary number
1 view (last 30 days)
Show older comments
Dear friends
I would like to generate a random number include 24 bits 4 bits of 1 and 20 bits of 0. Can you help me?
Best Regards
Mohsen
0 Comments
Accepted Answer
Jan
on 5 Dec 2018
Edited: Jan
on 5 Dec 2018
What exactly is a "number include 24 bits"?
This sets 4 elements to 1 and 20 to 0:
v = zeros(1, 24);
v(randperm(24, 4)) = 1;
What is the wanted output?
result = bin2dec('0' + v)
% or
result = v * power(2, 0:23).'
Instead of creating the sum using the dot product, you can use the indices replied by randperm directly:
result = sum(2 .^ (randperm(24, 4) - 1));
I hope this was not a homework question. Otherwise it will be hard for you to submit your own solution now. But you participate in this forum for 6 years now, such that I assume that you are not in the learning phase anymore.
0 Comments
More Answers (1)
Mohsen
on 5 Dec 2018
Edited: Mohsen
on 5 Dec 2018
2 Comments
Jan
on 6 Dec 2018
Edited: Jan
on 6 Dec 2018
I do not understand what "number dimension, max and min" means. Maximum and minimum of what? My answer includes a method to create random vectors already:
v = zeros(1, 24);
v(randperm(24, 4)) = 1;
Do you now want to create all these vectors? Then:
M = nchoosek(1:24, 4);
for k = 1:size(M, 1)
v = zeros(1, 24);
v(M(k, :)) = 1;
...
end
See Also
Categories
Find more on Logical in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!