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# Binary tree traversal
From a physical structure perspective, trees are data structures based on linked lists. Hence, their traversal method involves accessing nodes one by one through pointers. However, trees are non-linear data structures, which makes traversing a tree more complex than traversing a linked list, requiring the assistance of search algorithms.
From a physical structure perspective, a tree is a data structure based on linked lists. Hence, its traversal method involves accessing nodes one by one through pointers. However, a tree is a non-linear data structure, which makes traversing a tree more complex than traversing a linked list, requiring the assistance of search algorithms.
The common traversal methods for binary trees include level-order traversal, pre-order traversal, in-order traversal, and post-order traversal.