Solution Review: Print Pre-Order Traversal
Explore the pre-order tree traversal technique by learning a recursive method to print each node starting from the root, then its left child, followed by its right child. Understand how this traversal works in Go and analyze its time complexity, gaining practical skills to implement tree processing algorithms effectively.
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Solution
In pre-order traversal, the node is visited first, then its left child (or left subtree), and then its right child (or right subtree). This approach is followed recursively for each node in the tree until we reach the leaf node. Refer to the following illustration to better understandthe algorithm.
While visiting a node, we first print the value stored in the node to the console then continue moving to its left and right children. That’s why the first element printed on the console is always the root node ...