In: Computer Science
1. Create the binary tree that has postorder traversal of { b d a h g c f,} and has the inorder traversal of {b i a d f g h c}
2. Create the binary tree that has the preorder traversal of {10, 20, 40, 50, 80, 60, 70, 90} and the inorder traversal of { 40, 50, 20, 10, 80, 70, 90, 60}