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Which traversal method is used to get the nodes of a binary tree in non-decreasi

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Question: Which traversal method is used to get the nodes of a binary tree in non-decreasing order?

Options:

  1. Pre-order
  2. Post-order
  3. In-order
  4. Level-order

Correct Answer: In-order

Solution: 

In-order traversal visits the left subtree, the root, and then the right subtree, which results in nodes being accessed in non-decreasing order for binary search trees.

Which traversal method is used to get the nodes of a binary tree in non-decreasi

Practice Questions

Q1
Which traversal method is used to get the nodes of a binary tree in non-decreasing order?
  1. Pre-order
  2. Post-order
  3. In-order
  4. Level-order

Questions & Step-by-Step Solutions

Which traversal method is used to get the nodes of a binary tree in non-decreasing order?
  • Step 1: Understand what a binary tree is. A binary tree is a data structure where each node has at most two children, referred to as the left child and the right child.
  • Step 2: Learn about traversal methods. Traversal methods are ways to visit all the nodes in a binary tree.
  • Step 3: Identify the types of traversal methods. The main types are pre-order, in-order, and post-order.
  • Step 4: Focus on in-order traversal. In in-order traversal, you visit the left subtree first, then the root node, and finally the right subtree.
  • Step 5: Understand how in-order traversal works for binary search trees (BST). In a BST, the left child is always less than the parent node, and the right child is always greater.
  • Step 6: Conclude that when you perform in-order traversal on a binary search tree, you will visit the nodes in non-decreasing order.
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