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Grokking the Coding Interview Patterns in C#

Binary Tree Preorder Traversal

Explore how to implement preorder traversal on binary trees by visiting the root node first, then left and right subtrees. Understand the traversal process and constraints to solve related coding interview problems confidently.

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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 ...