Put array data inside another array without a for cycle

I have 2 array of equal dimension: 1440000x1. I need to put in the 2nd array the value 0 when there is the value 0 in the first array (in the same position). There is a quick way to do this not using a for cycle?

Answer 1

[Guillaume]

Very simply:

array2(array1 == 0) = 0