First, the current pointer is initialized to the root. Keep traversing to its left child while pushing visited nodes onto the stack. When you reach a NULL node (ie, you’ve reached a leaf node), you would pop of
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...