extract logical locations that match array

Hi I know this might be simple but i have a logical array and another double arry with the same length. I want to extract the value of the locations in array two that correspond to to 1 in the logical array.

A=1 0 1 1 0

B= 77 5 2 8 9

I did the following

C=and(A,B)

D=B(C)

but it only gives me D= 77 2 8. I want the result to include zero for the locations that dont match. so ans would be D= 77 0 2 8 0

I would appriciate any help on this! Thanks in advance!

Answer 1

[Adam]

B .* A

would seem to give what you want

[ALDO]

Thank you so much. worked perfectly!