**Traversal**: The code performs a preorder traversal of the binary tree. In preorder traversal, each node is visited once in the order: root, left subtree, and then right subtree.

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Is there any way to implement a nonrecursive preorder traversal of a binary tree without using a stack? In a standalone function?the recursive preorder ...

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 tree ...