How do I change Array element with another array element?

I am new to matlab and I apologize if my question confuses you.

Basically, if i have an array A = [0 0 0 0] and then I want to replace each value with another Array B [1 1 0 0] how would I go about that? The reason for this is because A is a temp array and I would be adding it into another larger array, so a 2d matrix.

so B is an input to a function, and I am replacing the values of A with B, then doing some math operations and then adding the final product to another Array C.

Thank you,

Answer 1

[David Hill]

A = [0 0 0 0];
B = [1 1 0 0];
A=B

A = 1×4

1 1 0 0

Answer 2

[Voss]

A = [0 0 0 0];
B = [1 1 0 0];

To replace each element of A with the corresponding element of B:

A = B; % since A and B are the same size, just replace all of A with B

or:

A(:) = B; % to preserve the size of A when B has different size
          % (as long as the number of elements is the same)

An example of the second usage:

A = [0 0 0 0] % 1-by-4

A = 1×4

0 0 0 0

B = [1 2; 3 4] % 2-by-2

B = 2×2

1 2 3 4

A(:) = B % A stays 1-by-4, but now it contains the elements of B in (column-major) order

A = 1×4

1 3 2 4