Dmitriy Novozhilov
12 lines
265 B
Kotlin
Vendored
12 lines
265 B
Kotlin
Vendored
sealed class Tree {
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object Empty: Tree()
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class Leaf(val x: Int): Tree()
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class Node(val left: Tree, val right: Tree): Tree()
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fun max(): Int = when(this) {
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is Empty -> -1
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is Leaf -> this.x
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is Node -> this.left.max()
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}
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}
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