In this exercise, we will explore Hashing. We won’t contribute to our game this week, but we
will be building something we can use in the game next week. We will also learn about
Generics.
Part 1 (50%) – Hashing
In this part, we want to explore hashing. Let’s start by creating a class we can hash. Follow
these steps:
1. Create a Console App project.
2. Create a class named PartKey. Note that this class will be immutable.
3. Create a private string field to hold a part’s manufacturer name.
4. Create a private field to hold the part’s name.
5. Create a constructor with the parameters necessary to make this immutable.
6. Create any necessary getters and setters (remember, the class is immutable).
7. Override the GetHashCode() method. Write your own hash of the name and
manufacturers name by XORing all the characters together.
8. Override the Equals() method. Note that the GetHashCode() and Equals() methods need
to work together.
9. In the Program.cs class create a static method named TestPartKey. Call this method
from the Main() method. In TestPartKey(), create three different PartKey instances. Print
out their hash codes and see if they are different. Also, write code to try all conditions of
the Equals() method. These do not have to be assertions. The point of this code is to
print the results and see what happens. Be sure to show all six Equals() condition cases.
Run your program and make sure it all works.
10. Create a simple PartInfo class. This class has a private int to keep track of inventory
levels and a private int price (expressed as cents). Create a constructor to initialize the
two values. Also create getters and setter