Contest

Author: fanzipei

965_univalued_binary_tree.scala

@@ -0,0 +1,6 @@
+object Solution {
+    def isUnivalTree(root: TreeNode, value: Int = -1): Boolean = {
+        if (root == null) true
+        else (if (value >= 0) (value == root.value) else true) && isUnivalTree(root.left, root.value) && isUnivalTree(root.right, root.value)
+    }
+}