Want to add two 2D array with special condition

I want to add two 2D array and want the following result.

A=[0 0 1;1 2 3; 0 0 0 ]; B= [1 2 1; 1 0 0; 2, 3, 0].

Now I want the matrix, A+B= C=[1, 2, 1; 1,2,3; 2,3,0]

But the condition is : 0 + any number = any number; 0+0=0; sum of two number other than zero = average of two number

Answer 1

[John D'Errico]

Easy peasy.

A = [0 0 1;1 2 3; 0 0 0 ];
B = [1 2 1; 1 0 0; 2, 3, 0];
C = (A + B)./(1 + (A&B))

C = 3×3

1 2 1 1 2 3 2 3 0

The trick is to look carefully at what 1+(A&B) does.

[ASHESH RUDRA PAUL]

Thank you...Sir