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esmeco
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COuld someone explain how in order and post order tree traversal work?I've searched through other websites but none of them would explain me in a way I could understand...Thanks in advance for the reply!
Tree traversal is the process of visiting each node in a tree data structure, following a specific order, without missing any nodes. It is an important concept in computer science and is used in various applications such as binary search, sorting, and expression evaluation.
There are three main orders of tree traversal: in-order, pre-order, and post-order. In-order traversal visits the left subtree, then the root, and then the right subtree. Pre-order traversal visits the root first, then the left subtree, and finally the right subtree. Post-order traversal visits the left subtree, then the right subtree, and finally the root.
In-order tree traversal is a depth-first traversal method that visits all the nodes in a tree in a left-root-right order. It follows the rule of visiting the left subtree first, then the root, and finally the right subtree. It is commonly used in binary search trees to retrieve data in ascending order.
Post-order tree traversal is a depth-first traversal method that visits all the nodes in a tree in a left-right-root order. It follows the rule of visiting the left subtree first, then the right subtree, and finally the root. It is commonly used in mathematical expressions to evaluate the expression in a postfix notation.
The main difference between in-order and post-order tree traversal is the order in which the nodes are visited. In-order traversal visits the left subtree first, then the root, and finally the right subtree. Post-order traversal visits the left subtree first, then the right subtree, and finally the root. Additionally, the order in which the nodes are visited also affects the output of the traversal, making them suitable for different applications.