6.5 What are two-dimensional arrays?

A. Introduction

There are typically 4 classes(freshman, sophomore, junior and senior) in a high school. Assume each class has 300 students. If you want to record height data of all 4 classes and find out the average, max or min of each class, do you have to create 4 different arrays? Or, you can use two-dimensional arrays. How?

B. Watch ... (Slides)

C. Now, do the following:

1. Create a new class for 2-D array practice.

2. Create a 4x300 2-D array and fill it with randomly generate student height (70-80 inches)

D. Check how well you score and see if you can find out what are wrong in these slides.