Namme 141 exam more logically
insertion sort question, no answer yet
added question 9 answer
Add Chris and Eric's brilliant 141 midterm question

No answers yet, though
Added question #3 from the old final review to the end
of the midterm review. Changed question structure from
a linked list to a regular Python list.
insertion sort/complexity questions and answers added
Merge rogue 241 midterm file into 141 one