Adding the word “and” before the final item of an array in Swift

Question

I have a list of items in an array. The default output of the items is a simple list separated by commas. However, a proper sentence would include the word \"and\"

Answer 1

var arrNames:[String] = ["Apple","Bee","Carrot","Dog"];
var allNames:String!


override func viewDidLoad() {
    super.viewDidLoad()

    allNames = arrNames[0]

    for i in 1...arrNames.count-1{
        if i == arrNames.count - 1 {
            allNames = allNames + " and " + arrNames[i]
        }else{
            allNames = allNames + ", " + arrNames[i]
        }
    }

    print(allNames)
}