If loop on lists for counting elements

I have two lists

A0 = [1,3,5,9];
A1 = [2,5,1,0];

and I want to make counts of how many elements in A0 are smaller than A1. I define:

counter0 = 0;
counter1 = 0;
and then the for loop:
for k=1:length(A0)
    if A0(k)>A1(k)
        counter0 = counter0 + 1
    else if A0(k)<A1(k)
            counter1 = counter1 + 1
        end
    end
end

So the result should had been:

counter0 = 2

counter1 = 2

But this loop will not work for me. How can I make it functional?

Answer 1

[Awais Saeed]

You do not need a loop for this, just use

A0 = [1,3,5,9];
A1 = [2,5,1,0];
count = length(find(A0<A1))

Answer 2

[KSSV]

A0 = [1,3,5,9];
A1 = [2,5,1,0];

iwant = 0 ; 
for i = 1:length(A0)
    t = nnz(A0(i)<A1) ; 
    iwant = iwant+t ; 
end

Answer 3

[KSSV]

A0 = [1,3,5,9];
A1 = [2,5,1,0];
idx = A0' < A1 ;
iwant = nnz(idx(:)) ;