traversing a binary tree without recursion

Traversing a binary tree without recursion refers to the process of visiting each node of a binary tree in a systematic manner without using a recursive approach. This can be achieved by utilizing a stack data structure to store the nodes of the tree that need to be processed. By iteratively traversing the binary tree, we can efficiently visit each node, perform desired operations, and maintain the order of traversal, such as in-order, pre-order, or post-order.

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