Archangelix/S99 — comment on commit 43fc74b202749d1d322031db94e3b6cc5aab271a
File: src/com/s99/S01.scala line 8
By anrizal06:

Sama seperti yang pertama, complete implmentation left as exercise :-)

```scala
def penultimate[A](xs:List[A]):Option[A] = ..... //
```