I have a program like this (MATLAB function on Simulink): And I want it to stop when I get 256 values. Does the randi function work almost continuously?

Question

dung cam 2022-3-5

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https://ww2.mathworks.cn/matlabcentral/answers/1664114-i-have-a-program-like-this-matlab-function-on-simulink-and-i-want-it-to-stop-when-i-get-256-value

回答： Benjamin Thompson 2022-3-7

function [ key ] = keyGen()
key = zeros(1,256);
for i = 1:256
    if(rem(i,9)==0)
        key(i) = i;
    else
        x = 261;
        while rem(x,9) == 0 || ~isempty(find(key == x, 1)) || i == x
            x = randi([1,256]);
        end
        key(i) = x;
    end
end
end

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Jan 2022-3-5

I do not understand the question. randi does not work continously, but randomly.

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Answer 1

Benjamin Thompson 2022-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/1664114-i-have-a-program-like-this-matlab-function-on-simulink-and-i-want-it-to-stop-when-i-get-256-value#answer_912059

You can call randi once to get a set of integer random numbers as a vector or matrix. Call randi(N, X, Y), where N is the max integer value that you want randi to return, X is the number of rows in the output, Y is the number of columns in the output.