perl: remove elements of array2 from array1

Hi, I'm learning perl programming and would appreciate some help. How do I write code to remove elements of array2 from array1

I.e.

@array1={'a','b','c','d'}
@array2={''a','z','c','x'}


(magic happens, processes @array1 and @array2)

dump @array1 gives 'b','d'

Any clues?

Thanks!

>>6
O(n) for sets, obviously.