Abstract: The tree (hierarchical) structure is one of the elementary memory arrangements, used by numerous data structures – ranging from simple to relatively sophisticated ones. The most well-known ...

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Tree recursion is a technique used to traverse a tree-like data structure by recursively visiting each node and its children. It’s widely used in computer science, particularly in algorithms that ...

Given the root of a binary tree, return the level order traversal of its nodes' values (i.e., from left to right, level by level).

* Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between).

Abstract: Tree traversal is a technique which involves visiting, verifying, and updating each node in a tree just once. This paper gives insight on the various approaches for the same. The tree can be ...