Which traversal method would you use to get the nodes of a binary tree in revers

Practice Questions

Q1
Which traversal method would you use to get the nodes of a binary tree in reverse level order?
  1. Pre-order
  2. In-order
  3. Post-order
  4. Level-order

Questions & Step-by-Step Solutions

Which traversal method would you use to get the nodes of a binary tree in reverse level order?
  • Step 1: Understand that level-order traversal visits all nodes at the same depth before moving to the next level.
  • Step 2: Perform a level-order traversal of the binary tree using a queue to keep track of the nodes to visit.
  • Step 3: As you visit each node, store the nodes in a list or another data structure.
  • Step 4: After completing the level-order traversal, you will have the nodes in normal order (from top to bottom, left to right).
  • Step 5: To reverse the order, use a stack or simply reverse the list of nodes you collected during the traversal.
  • Step 6: The final output will be the nodes in reverse level order.
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