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Binary Tree Preorder Traversal

Explore how to traverse a binary tree using preorder traversal by visiting the root node first, then left subtree, and finally the right subtree. Understand the problem constraints and practice your solution in a coding environment to gain confidence in this essential tree depth-first search technique.

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Statement

Given the root of a binary tree, your task is to return a list containing the values of its nodes in preorder traversalIn preorder traversal, we visit each node by first visiting the current node, then its left subtree, and finally its right subtree order.

Constraints:

  • The number of nodes in the tree is in the range ...