How to select data from one array based on data from another?

Question

iOS

Hello
Such task:
There is an array in which Int-s are stored, [0,2,3] for example.
There is a second array that stores objects of the Currency class [bc.Currency, bc.Currency, ...].
How can you derive an object from Currency based on an index that is equal to the value from an Int array?
For example: To display only objects whose index is 0, 2, 3.
Thank you in advance for your help!

Answer 1

Solved the problem
By creating two constants
let defaultData - passed an array containing Int indices
here let currencyData - passed an array containing class objects here
Then unpacked defaultData through for in and set it as an index value in currencyData.

func svodka () {
        let defaultData = UserDefaults.standard.object(forKey: "Saved Default Selection") as? [Int]
        let currencyData = currenciesArray
        for item in defaultData! {
            print (currencyData[item].codeOfCurrency)

Answer 2

defaultData!.map{elem in print(currencyData[elem].codeOfCurrency) }
Maybe