CSC152 2005F, Class 31: Vectors

Admin:
* Cool Jazz concert tonight (EC)
* Cool basketball "game" tonight (EC)
* Please load the Vector API in your Web browser
* Homework: Finish the lab.

Overview:
* PAMI of vectors
* Using vectors to improve Fibonacci computation
* (Possibly): Lab

Vectors:
* Philosophy: Collect values and efficiently reference them
  by numeric (non-negative integer) index.
  * Plus: Expand when necessary.
  * Plus: A kitchen sink of additional methods.
* Applications: Whenever we want to collect data.
* Methods:
  * Expect: Construct, set, get, length, changesize
* Implementation (likely)
  Each vector has an underlying array field.
  When you change the size, it builds a new array
    and copies over all the values
  Setting the size is not efficient, but it is convenient