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What is the post-order traversal sequence of a binary tree with root 1, left chi

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Question: What is the post-order traversal sequence of a binary tree with root 1, left child 2, and right child 3?

Options:

  1. 1, 2, 3
  2. 2, 3, 1
  3. 3, 2, 1
  4. 1, 3, 2

Correct Answer: 2, 3, 1

Solution: 

In post-order traversal, we visit the left subtree, then the right subtree, and finally the root. Thus, the sequence is 2, 3, 1.

What is the post-order traversal sequence of a binary tree with root 1, left chi

Practice Questions

Q1
What is the post-order traversal sequence of a binary tree with root 1, left child 2, and right child 3?
  1. 1, 2, 3
  2. 2, 3, 1
  3. 3, 2, 1
  4. 1, 3, 2

Questions & Step-by-Step Solutions

What is the post-order traversal sequence of a binary tree with root 1, left child 2, and right child 3?
  • Step 1: Identify the structure of the binary tree. The root is 1, with a left child 2 and a right child 3.
  • Step 2: In post-order traversal, we first visit the left child. So, we visit node 2.
  • Step 3: Next, we visit the right child. So, we visit node 3.
  • Step 4: Finally, we visit the root node. So, we visit node 1.
  • Step 5: Combine the visited nodes in the order they were visited: 2 (left), 3 (right), 1 (root).
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