teaching machines

CS 145 Lecture 29 – ArrayList and 2D Arrays

November 11, 2015 by Chris Johnson. Filed under cs145, fall 2015, lectures.

Agenda

• what ?s
• program this
• ArrayList vs. array
• to higher dimensions

TODO

• Finish homework 5.

Note

We start with a Program This in two installments:

You are an armchair runner. Instead of competing in races, you like to figure out where you would have finished had you actually run. You want to write a method that determines your place in some race. First, what incoming data do you need to solve this?

Now for installment 2:

Write this method.

We’ll discuss your solutions and implement one in Java. Our times will come from a file, which we will read. We will encounter the ageless problem: as we read the the numbers, we need to a place to store them. But we can’t store them in an array until we know how many elements we have. What workarounds to this problem are there?

Code

…

Haiku