Assume that a left-sum node is a node with a value equal to the sum of all values in its left subtree. Write a BST member function void BST::LeftSum(DLL*>& listNodes) that receives an empty Doubly-linked list (DLL) of TNode pointers. The function must find all the full_left_sum nodes and add them to the doubly-linked list. Note that leaf nodes and non-leaf nodes with a null left pointer are not full_left_sum. To get full credit, your algorithm needs to run in a linear time. use c++ language

This first part of the film shows the early history of motion pictures. how accurate do you think the portrayal of the early motion picture industry is? why? is historical accuracy important in films and theatre productions? explain. in the scene where don is going to the party (starting at time code 14: 51), we see a street scene as he first rides with cosmo and then with kathy. what aspects did the filmmaker include to make the scene look and feel like don, cosmo, and kathy are riding in a car on a street? think about elements such as scenery, sound, props, lighting, and so on. a "talkie" picture is shown starting around time code 21: 15. how does the audience in the film react to the "talkie"? what influence do audiences have on film and theatre performances? how do film and theatre actors influence audiences? in the musical scene with cosmo (starting at time code 27: 00), how does the actor use props? what is the result? do you think the use of props effectively fulfilled the artistic vision for this musical number? why or why not?