Question

What basic operation is used to traverse a tree.​

Answer 1

Explanation:

In-order Traversal In this traversal method, the left subtree is visited first, then the root and later the right sub-tree. We should always remember that every node may represent a subtree itself. If a binary tree is traversed in-order, the output will produce sorted key values in an ascending order.

Answer 2

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To traverse any tree with depth-first search, perform the following operations recursively at each node:

Perform pre-order operation.

For each i from 1 to the number of children do: Visit i-th, if present. Perform in-order operation.

Perform post-order operation..

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