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Documentation for scala.util.Random.nextInt (n: Int): Int says "Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive)..." while for scala.util.Random.nextInt (): Int it says "Returns the next pseudorandom, uniformly distributed int value...", without saying anything about the zero. Can I get a negative value here occasionally?
765
No, nextInt() -- the way you are calling it -- does not return negative numbers.
def nextInt(n: Int): Int. Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence. def nextInt(): Int. Returns the next pseudorandom, uniformly distributed int value from this random number generator's sequence ...
nextInt(int n) : The nextInt(int n) is used to get a random number between 0(inclusive) and the number passed in this argument(n), exclusive.
nextInt. Returns the next pseudorandom, uniformly distributed int value from this random number generator's sequence. The general contract of nextInt is that one int value is pseudorandomly generated and returned.
Yes, you can (and that's ok due to definition of uniform distribution). Moreover you'll get it in nearly 50% of cases.
(for(i <- 1 to 100000) yield scala.util.Random.nextInt()).filter(_<0).length
have yielded for me 49946 - that's quite close to the 50%.
62
Apparently, yes. It returned a negative value on my first try! :-)
scala> import util.Random
import util.Random
scala> Random.nextInt
res0: Int = -299006430
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