Swapping Left and Right Children in a Binary Tree (Recursive and Iterative Methods)

Explanation:

1. Base Case: If the current node (pTree) is NULL, the function returns immediately.
2. Swapping: A temporary pointer pTemp is used to hold the left child while we swap the left and right children.
3. Recursive Calls: The function calls itself for the left and right children to ensure that all nodes in the tree are processed.

Iterative Method Using a Queue

The iterative approach uses a queue to perform a level-order traversal of the tree. This method avoids the use of recursion and is often preferred in environments where stack overflow could be a concern due to deep recursion.

Here is the C++ implementation of the iterative method: