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What is the primary purpose of threading in a Threaded Binary Search Tree (TBST)?

Question

What is the primary purpose of threading in a Threaded Binary Search Tree (TBST)?

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The primary purpose of threading in a Threaded Binary Search Tree (TBST) is to make in-order traversal faster and do it with no stack and without recursion. A binary tree is threaded by making all right child pointers that would normally be null point to the in-order successor of the node, and all left child pointers that would normally be null point to the in-order predecessor of the node. This means you can perform an in-order traversal of the tree by simply following the right (or left) pointers.

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