Tree
package tree sealed trait Tree[+A] case class Leaf[A](value: A) extends Tree[A] case class Branch[A](left: Tree[A], right: Tree[A]) extends Tree[A]
posted on 2016-04-23 15:51 JonkeyGuan 阅读(206) 评论(0) 收藏 举报
package tree sealed trait Tree[+A] case class Leaf[A](value: A) extends Tree[A] case class Branch[A](left: Tree[A], right: Tree[A]) extends Tree[A]
posted on 2016-04-23 15:51 JonkeyGuan 阅读(206) 评论(0) 收藏 举报
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