MATLAB: Functions to exclude repetitions

no repeat;randomwhile loop

hello everyone, I want to know if there is a function that allows me, through a random variable, to run my code with all the elements of a matrix 1xn without repetition. here's an example of what i want to do:
Caos = [1:10];             %is my matrix
a = min(Caos);             %minimum value of "Caos"
b = max(Caos);             %maximum value of "Caos"
c = length(Caos);                                                            
d = 0;                     %counter
R = randi([a b],1);        %random variable that's I don't want to repeat
while d<c
    %execute my code
d=d+1
end

Best Answer

Guess:
    R2 = unique( R, 'stable' );
'stable' to avoid to sort R2
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