Mapping elements of a matrix using a vector array

I have a matrix named A with size N×3. The values of the elements of A ranges from 1 to M. For example, A with size 8×3:

A = [ 1     2     3;
      1     4     5;
      5     6     7;
      1     3     4;
      5     6     7;
      1     4     7;
      4     3     2;
      7     8     9]

B is a vector array whose elements are the values of element of A. In the example above, B with size 9×1:

    B = [1 2 3 4 5 6 7 8 9]

I have another vector array named C with the size of B with which I want to replace element of B in A. In fact, C represents whether the elements of B in A has repeated more than for example 2. In my example, C with size 9×1:

    C = [0 0 0 0 0 0 0 1 1]

Here is the expected result, where the elements 1 to 7 are replaced by 0 and 8 and 9 are replaced by 1:

Anew = [ 0     0     0
         0     0     0
         0     0     0
         0     0     0
         0     0     0
         0     0     0
         0     0     0
         0     1     1]

How can I replace the elements of B in A with its corresponding values using C? Thank you.

[Azzi Abdelmalek]

What is the expected result?

Answer 1

[the cyclist]

I am not 100% sure of which of the following two possibilities you want, given your example, but I think either

Anew = ismember(A,B(logical(C)))

or

[~,idx] = ismember(A,B);
Anew = C(idx)

is what you want. I think it's the latter.

[Javier]

The second option matches the expected. Great! Thank you, cyclist