Swift: Find second smallest and second largest elements in an array of integers

Seconds.swift

// I publicly share any answers to "coding challenges" I receive as a part of the interview process
// copy/paste this into an Xcode playground or the code challenge repl of choice

// Implement a function in Swift that finds the second smallest and second largest elements in an array of integers.

// this is a trick question designed to make you waste time if you haven't memorized Foundation...

func seconds(_ numbers: [Int]) -> (Int?, Int?){
    let sorted = numbers.sorted()
    return (sorted.dropFirst().first, sorted.dropLast().last )
}