Random number from an array without repeating the same number twice in a row?

Question

I am making a game using Swift and SpriteKit where i move an object to random locations based on an array.

The array that is made up of CGPoints:

let         


        

Answer 1

The code below doesn't random the same number.

   var currentNo: UInt32 = 0

    func randomNumber(maximum: UInt32) -> Int {

        var randomNumber: UInt32

        do {
            randomNumber = (arc4random_uniform(maximum))
        }while currentNo == randomNumber

        currentNo = randomNumber

        return Int(randomNumber)
    }