1. There is some redundant code in the two stack classes discussed in this section. Which code is it, and how could it be eliminated by the use of inheritance? 2. What is the running time of the...

1. There is some redundant code in the two stack classes discussed in this section. Which code is it, and how could it be eliminated by the use of inheritance?

2. What is the running time of the __eq__ method, expressed in big-O notation?

3. Write a code segment that prints the items in the positional list P, from the last to the first.