Find indicies of k smallest matrix elements

I'm trying to find the indicies of smallest k matrix elements.

For example if I have

A = [10 5 2; 34 5 21; 4 6 8];

and I want to find the smallest 2 elements indicies then I want indicies 7 and 3.

Answer 1

[Xingwang Yong]

[~, indices] = sort(A(:), 'ascend');
ind = indices(1:k);

[Brady Dean]

Ah, I forgot about the A(:) trick. This works perfectly.

Answer 2

[Sindar]

[~,idx] = mink(A,2);

[madhan ravi]

The reason is because the OP was using older version of MATLAB, in case you were wondering.

[Brady Dean]

I'm using R2020b, that's the newest isn't it?

mink gives minimums over a dimension, not the whole matrix. Sindar's code doesn't work for my example above.

[madhan ravi]

Unfortunately not everyone has the Crystal Ball.