Swift - Determine if Array1 contains at least one object from Array2

Question

I have 2 Arrays. Say, array1 = [1,2,3,4,5] and array2 = [2,3]. How could I check in swift if array1 contains at least one item from

Answer 1

An alternative way would be using Sets:

let array1 = [1,2,3,4,5]
let array2 = [2,3]
let set1 = Set(array1)
let intersect = set1.intersect(array2)

if !intersect.isEmpty {
    // do something with the intersecting elements
}