Binary Tree, Data Structure Algorithm, Algorithms, Dotnet, Csharp.
static IList<IList<int>> RecursiveApproach(TreeNode root) { // Create a new list to store the result of the level order traversal IList<IList<int>> result = new List<IList<int>>(); // If the root is null, return an empty list if (root == null) return result; // Start the recursive traversal from