If you keep visited flags in the binary tree while traversing, the problem could be solved in a more direct manner. But we will not discuss this solution here, as it has already been discussed in Wikipedia’s article onTree Traversal. Here, we discuss a solution without using any visited ...
Collection of various algorithms in mathematics, machine learning, computer science and physics implemented in C++ for educational purposes. - C-Plus-Plus/others/iterative_tree_traversals.cpp at master · TheAlgorithms/C-Plus-Plus
The time complexity of the above recursive solution isO(n), wherenis the total number of nodes in the binary tree. The auxiliary space required by the program isO(h)for the call stack, wherehis the height of the tree. Iterative Solution In an iterative version, perform alevel order travers...