LeetCode Problem: Binary Tree In-Order Traversal | Recursive Solution in C# Explained

Here's my solution to the LeetCode Problem: Binary Tree In-Order Traversal, implemented in C# using a Recursive Approach. 🚀

💡 Problem Overview:
The challenge is to perform an in-order traversal of a binary tree, where the nodes are visited in the order: left subtree → root → right subtree. This solution uses a simple recursive function to traverse and store the visited nodes in the correct order.

✅ What You'll Learn in This Video:

The concept of an in-order traversal of a binary tree.
A clean and structured recursive implementation to perform in-order traversal.
How to use a helper function to manage list state during traversal in C#.
🔔 Highlights of This Solution:

Time Complexity: O(n), where n is the number of nodes in the tree, as each node is visited exactly once.
Space Complexity: O(h), where h is the height of the tree, due to the recursion stack.
Core Insight: Using a helper function simplifies the traversal process by managing a list state to collect the nodes in the correct order. The simplicity and readability of recursion make it ideal for in-order traversal.
💡 Understanding in-order traversal is fundamental to solving tree-based problems and mastering recursion techniques. This problem serves as a great starting point!

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