117 Homework Assignment #6 (2 pts)

Remembering that all the homework, quizzes, and exam
 are open-book, open-note,
  create two small, concise, summaries
   (ie quick references)
    for the following topics:
      1. arrays
      2. hashes

Include actual code examples! (Very important!)
For both, include how to initialize the structure from a list.
For arrays, include push, pop, shift, unshift
 and how to determine the last index
  and the size of the array.

To get credit for this assignment,
 show your 2 summaries to the instructor in class
  or email them to the instructor
   (see email address in the class overview).