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ajozwik/P14-15.scala

Last active December 25, 2015 17:09
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P14-15.scala
def p14[T](ts: Seq[T]): Seq[T] = p15(2,ts)
def p15[T](n:Int,ts: Seq[T]): Seq[T] = {
def p15( ts: Seq[T], acc: Seq[T]): Seq[T] = ts match {
case Nil => acc.reverse
case h :: t => p15(t, Seq.fill(n)(h) ++ acc)
}
p15( ts, Nil)
}
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