MATLAB: Count the number of times a value occurs in a specific of an array

Question

Given a array, is there any way to count the number of times a value occurs within a specific row of that array?

For example, if I have a array:

 A=[1,2,5,2,3,4,2; 4,2,1,5,3,2,3; 1,4,2,3,2,2,1];

I want to know how many times the value '2' occurs in the second row

Thanks

Answer 1

A=[1,2,5,2,3,4,2; 4,2,1,5,3,2,3; 1,4,2,3,2,2,1]
sum(A(2,:)==2)

%or

nnz(A(2,:)==2)