how to make a looping function to delete all members in a phi set?

Let

let

phi= [ 1, 2 , 3, 4]

k=randi[(phi),1,1]

k=3

newphi(newphi==k)=[]

phi=[1,2,4]

I want to loop until phi = empty set .... I have used the for function but when it is executed it can't be because the number is randomized back to the initial phi or phi = [1,2,3,4].

Answer 1

[Rik]

You don't update the original variable, but you create a new one instead. You also have made a typo when writing the code here, because this isn't valid Matlab syntax.

[Muhammad Sam'an]

so, please give me the solution of mathlab code?

[Rik]

phi=1:4;
while ~isempty(phi)
    k=randi(max(phi));%not guaranteed to result in a match
    phi(phi==k)=[];
    
    %the code that actually does something with phi goes here
end