Computer Science Homework Solutions
Problem
#32440

Data Structures

(a) Describe and illustrate how elements are normally added and removed from an efficient
implementation of the stack ADT, as defined in class, which is implemented using linked
lists.
                                            

(b) A stack is used to evaluate the following postfix expression. Show the state of the stack after
the minus sign is processed and its state after the multiplication sign is processed.


                           3 5 3 + 4 + - 6 *
                                            

(c) An array can be used to hold a complete or full binary tree. Explain how this data structure
would be set up and how a node's left and right children could be reached. What changes
would be needed if there was a requirement to handle non-full, non-complete binary trees?
                                            
Can you please explain these?

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