-
-
Save pavithranrao/c1930f5e31cf1c519e887453cab2dfb9 to your computer and use it in GitHub Desktop.
Reverse a LinkedList in Scala
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
case class Node(value: Int, next: Option[Node]) | |
def reverse(node: Node, prev: Option[Node] = None): Node = { | |
val reversed = node.copy(next = prev) | |
node.next map {reverse(_, Some(reversed))} getOrElse reversed | |
} | |
/****************************************************************/ | |
val one = Node(1,Some(Node(2,Some(Node(3,None))))) | |
println(s"$one\n${reverse(one)}") |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment