ADT Analysis

1. In general, how useful is the Stack data structure? Can you think of other uses aside from those discussed in the applications chapter?
2. If we didnt have the Stack data structure can you think of another way to implement the LIFO (last in first out) concept?
3. Can the Stack ADT accept/handle null entries? Why or why not?

Expression Evaluator Application Analysis

1. Briefly describe your application (in real world terms). Include relevant decision points (e.g. how to handle interactions between classes. What issues/problems arose during the design, implementation, integration, and testing phases and how did you resolve them?
2. Would you say that the Stack ADT is useful specifically for evaluating arithmetic expressions? Why or why not?