-- if we have hierarchical data then we use tree data structure. --when a node that do not have parent node is called as "root node" . # The root node is the topmost node in a tree data structure. # ...

Return the root node of a binary search tree that matches the given preorder traversal. (Recall that a binary search tree is a binary tree where for every node, any descendant of node.left has a value ...

Abstract: The tree (hierarchical) structure is one of the elementary memory arrangements, used by numerous data structures – ranging from simple to relatively sophisticated ones. The most well-known ...