kotlinWhen.kt

val random = Random
val positiveInts = 1 .. Int.MAX_VALUE
val negativeInts = -1 downTo Int.MIN_VALUE

val sign = when(val randomNumber = random.nextInt()) {
    in positiveInts -> "positive $randomNumber"
    in negativeInts -> "negative $randomNumber"
    else -> "zero"
}

println("Number is $sign")