How to split an Int to its individual digits?

Question

I am trying to split an Int into its individual digits, e.g. 3489 to 3 4 8 9, and then I want to put the digits in an Int array.

I have already tried putting the num

Answer 1

Swift 5

extension Int {
    func digits() -> [Int] {
        var digits: [Int] = []
        var num = self
        
        digits.append(num % 10)
        
        while num >= 10  {
            num = num / 10
            digits.append(num % 10)
        }
        
        return digits.reversed()
    }
}