Select a random element of a vector and use randi command

What command should I use to randomly select an element from a vector and give it a random number by using the randi command while also displaying the other elements in the workspace?

Answer 1

[KSSV]

A = magic(5) ;
A = A(:) ;
N = numel(A) ;
idx = randi(N,1) ;
A(idx) = rand 

[Eric Junaeus]

Thanks for the reply!

I have made my own code based on yours:

A = zeros(1,10);
N = numel(A);
idx = randi(N);
A(idx) = randi(10); 

I would like to create a while loop that makes sure that as long there are any zeros in my vector, any of the elements will get a random number. I tried using any(A == 0) but it seems to give all elements at once a random number. Is it possible to add a random number to just one element at a time, save the value for that particular element, add another random number to any element, either to a different element or the same element that already has a random number (thus incrementing the random number to the already existing number) until all elements have a value of at least 1, necessitating the use of the all(A) command? Could if so could you also add comments to your code?