RandomIntSet.kt

import kotlin.random.Random
import kotlin.random.nextInt

// https://stackoverflow.com/posts/69076855/revisions @aSemy
val randomInts = generateSequence {
  // this lambda is the source of the sequence's values
  Random.nextInt(1..69)
}
  // make the values distinct, so there's no repeated ints
  .distinct()
  // only fetch 6 values
  // Note: It's very important that the source lambda can provide
  //       this many distinct values! If not, the stream will
  //       hang, endlessly waiting for more unique values.
  .take(6)
  // sort the values
  .sorted()
  // and collect them into a Set
  .toSet()