What is postorder traversal on this simple tree?

Question

Given the following tree:

Which traversal method would give as result the following output: CDBEA?

The answer in my study guide is Postorder, but I think postorder would output: DEBCA. Am I wrong?

Answer 1

You are not wrong.

A postorder traversal visits the left subtree, then the right subtree, then the root of the current tree (recursively).