Mikhail Glukhikh
14 lines
405 B
Kotlin
Vendored
14 lines
405 B
Kotlin
Vendored
sealed class Tree {
|
|
object Empty: Tree()
|
|
class Leaf(val x: Int): Tree()
|
|
class Node(val left: Tree, val right: Tree): Tree()
|
|
|
|
fun max(): Int {
|
|
<!DEBUG_INFO_IMPLICIT_EXHAUSTIVE!>when(this) {
|
|
is Empty -> return -1
|
|
is Leaf -> return <!DEBUG_INFO_SMARTCAST!>this<!>.x
|
|
is Node -> return <!DEBUG_INFO_SMARTCAST!>this<!>.left.max()
|
|
}<!>
|
|
}
|
|
}
|