List DropWhile
object DropWhile { def dropWhile[A](l: List[A], f: A => Boolean): List[A] = l match { case Nil => Nil case h :: t => if (f(h)) dropWhile(t, f) else h :: t } def main(args: Array[String]): Unit = { println(dropWhile(Nil, (a: Int) => a < 0)) println(dropWhile(List(-1, -3, -2, 3, 4, 5, 6), (a: Int) => a < 0)) } }
List()
List(3, 4, 5, 6)
posted on 2016-04-18 23:17 JonkeyGuan 阅读(277) 评论(0) 编辑 收藏 举报