Answer 1

Code Playground Swift appears to run on Swift 4 (4.0), so the second wouldn't work. As for arc4random, it seems that the Foundation library is required. Importing the library, however, sparks this:

https://bugs.swift.org/browse/SR-3648

I then tried to build my own RNG with system date/time, but that seems to require Foundation too! (Date(), NSDate())

*** 1 hour later ***

My final attempt. Dynamic memory allocation - fairly random.

print(UnsafeMutablePointer<Int>.allocate(capacity:1))

https://code.sololearn.com/cjZ97ZgStq68/

Answer 2

Jeffrey Asante As it is currently, the result is a string representation. Converting it to an Int should not be an issue (I think).