What is the result of a post-order traversal on a binary tree with nodes 1, 2, a
Practice Questions
Q1
What is the result of a post-order traversal on a binary tree with nodes 1, 2, and 3, where 1 is the root, 2 is the left child, and 3 is the right child?
1, 2, 3
2, 3, 1
3, 2, 1
1, 3, 2
Questions & Step-by-Step Solutions
What is the result of a post-order traversal on a binary tree with nodes 1, 2, and 3, where 1 is the root, 2 is the left child, and 3 is the right child?
Step 1: Identify the structure of the binary tree. The tree has a root node (1), a left child (2), and a right child (3).
Step 2: Understand the post-order traversal method. In post-order traversal, we visit the left child first, then the right child, and finally the parent node.
Step 3: Start the traversal at the root node (1).
Step 4: Move to the left child (2). Since 2 has no children, we visit 2 and record it.
Step 5: Return to the root (1) and now move to the right child (3). Since 3 has no children, we visit 3 and record it.
Step 6: After visiting both children (2 and 3), return to the root (1) and visit it last, recording it.
Step 7: Compile the results in the order they were visited: first 2, then 3, and finally 1.
