suppose the keys 3, 4, 45, 21, 92, 12 are inserted into a bst in this order. what is the postorder traversal of the elements?

The postorder traversal of the elements are 12, 21, 92, 45, 4, 3.The postorder traversal being one of the traversing method used to go to the node in the tree. It based on the principle LRN (Left-right-node). Postorder traversal has function to to get the postfix expression of a tree. We can print postorder traversal without create the tree. The concept is, root is always the first item in preorder traversal and it must be the last item in postorder traversal. We first recursively print left subtree, then recursively print right subtree. Finally, print root.Learn more about The postorder traversal at https://brainly.com/question/28335324#SPJ4