How to get list of different (un-common) items of 2 arrays in Swift

Question

This question is similliar to my other one

I have 2 arrays:

fruitsArray = ["apple", "mango", "blueberry", "orange"]
vegArray = ["tomato", "potato", "mango", "blueberry"]

How can I get the uncommon elements of fruitsArray comparing to vegArray

Expected Output = ["apple", orange]

Answer 1

Convert arrays to Set and use subtract() function to get what you want

   let fruitsArray = ["apple", "mango", "blueberry", "orange"]
   let vegArray = ["tomato", "potato", "mango", "blueberry"]

   let set1 = Set(fruitsArray)
   let set2 = Set(vegArray)

   let filter = Array(set1.subtract(set2))
   println(filter) //[apple, orange]