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

One of the possible ways is to use functional programming:

let myArray = ["Apple", "Bee", "Carrot", "Dog"]


let mapedArray = myArray.dropLast().map{
    myArray.indexOf($0) == myArray.count - 2 ? $0 + " and " + myArray[myArray.count - 1] : $0 + ","
}