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Question 1) Select any three options (from A to L) below that represent lists, and explain why or why not they can (or cannot) be considered as lists. Customers waiting in a checkout line A deck of playing cards A file directory system A line of cars at a tollbooth Laundry in a hamper A group of friends having a picnic A set of books on a bookshelf A crowd of people watching a parade A stack of papers on a desk A pack of wolves hunting in a forest A cluster of stars in a galaxy A collection of flowers in a garden. Question 2) What are the preconditions on index-based operations with a list? Question 3) How is recursion used in linked list data structure? Question 4) What is an iterator in Python and what is the purpose of it? Outline 2 methods with a code snippet for it.

          Question 1)  Select any three options (from A to L) below that represent lists, and  explain why or why not they can (or cannot) be considered as lists.
 Customers waiting in a checkout line
 A deck of playing cards
 A file directory system
 A line of cars at a tollbooth
 Laundry in a hamper
A group of friends having a picnic
A set of books on a bookshelf
A crowd of people watching a parade
A stack of papers on a desk
A pack of wolves hunting in a forest
A cluster of stars in a galaxy
A collection of flowers in a garden.
Question 2) What are the preconditions on index-based operations with a list?
Question 3) How is recursion used in linked list data structure?   
Question 4) What is an iterator in Python and what is the purpose of it? Outline 2 methods with a code snippet for it.

Added by Luc-A G.

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