MATLAB: Counting the number of elements that match between a vector and a matrix

countelementssum

I'm looking to count the number of elements that match between a vector and a matrix. I've used the code below:
K= magic(10);
vec=[0 3 7 9 11];
for i= 1:length(vec),
  sum(sum(K==vec(i))),
end
This keeps giving me a string of "ans=1" values, rather than the total number of elements that match up (It should be 4 that match). What can I change?

Best Answer

nnz(ismember(K,vec))
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