Binary Tree, Data Structure Algorithm, Algorithms, Dotnet, Csharp.
the levels to create the bottom-up result: public static IList<IList<int>> IterativeApproach(TreeNode root) { // List to store the levels of the tree IList<IList<int>> levels = new List<IList<int>>(); if (root == null) return levels; // If the tree is empty, return empty list // Queue to perform