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print leaf nodes of binary search tree

Leaf nodes of binary tree are the nodes with no children or no subtrees.
They have both left and right links as null.

In the above image nodes 1,4 ,7 ,13 have no sub-trees hence they are the leaf nodes.

Leaf nodes can be found easily by traversing the tree in inorder way and the printing the nodes that have no left or right subtrees.

C++ Program

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