edmund-h

func multiLineInputSetup() {
//Use this for multiple line inputs. The problem for which I generated this had the first term in its sequence as the number of lines of input. If this isn't available, you could just build a while loop that switches on whether a string can be instantiated with readLine()
    let fileName = ProcessInfo.processInfo.environment["OUTPUT_PATH"]!
    FileManager.default.createFile(atPath: fileName, contents: nil, attributes: nil)
    let fileHandle = FileHandle(forWritingAtPath: fileName)!

    guard let s = readLine(), let count = Int(s) else { fatalError("Bad input") }
    var output = ""
        for _ in 1...count {
        guard let s = readLine() else {continue}

edmund-h

// credit to @eirnym, adapted this from their OBJC code: https://gist.github.com/eirnym/c9526a045556e4d8464b41a367843e3c

// generates a random date and time in the past, limited by daysBack (a number of days before today)
// also generates a random time to go with that date.

// original request: http://stackoverflow.com/questions/10092468/how-do-you-generate-a-random-date-in-objective-c

func generateRandomDate(daysBack: Int)-> Date?{
        let day = arc4random_uniform(UInt32(daysBack))+1