Scan tree structure from bottom up?

Question

If given the following tree structure or one similar to it:

I would want t

Answer 1

This is called a post-order traversal of a tree: you print the content of all subtrees of a tree before printing the content of the node itself.

This can be done recursively, like this (pseudocode):

function post_order(Tree node)
    foreach n in node.children
        post_order(n)
    print(node.text)