CECS 277
LAB ASSIGNMENT #4
Assigned date: 10/15
Due date: 10/23
30 points

1. [10 points] Writing a simple lottery program. The program should randomly generates a wining lottery ticket, them prompt the player to enter a lotto numbers. Depending on how many numbers match, the player wins various prizes.

Sample output

Type 6 lotto numbers: 4  12  7  35  20  1
Your ticket was: [ 4, 12, 7, 35, 20, 1]
Winning numbers: [ 2, 13, 27, 7, 11, 4]
Match numbers: [4,7]
Your prize is $500.00

Requirements: Inplement the following methods in your program

• public static Set<Integer> generateWinningNumbers( )
  Winning numbers should be between 1 and 40
• public static Set<Integer> getTicket( )
  Read the player's lottery ticket from the console

2. [20 points] Write a program that keeps a map in which the keys of the map are objects of class Student. A student should have a first name, a last name, and a unique integer ID. For the grade changes and removals, lookup should be by ID. Prompt the user of the program to add or remove students, to modify the grades, or to print all the grades. The printout should be sorted by last name. If two students have the same last name, then use the first name as a tie breaker. If the first names are also identical, then use the integer ID. Supply compatible hashCode and equals methods to the Student class. Test the hash code by adding the Student objects to a hash set.

Hint:

• Use two maps.
• Calculates a hashcode by combining the hashcodes of the instance variables.
  @return a hashcode dependant on the instance variables
  */
  public int hashCode()
  {
  final int HASH_MULTIPLIER = 29;
  int h = HASH_MULTIPLIER * firstName.hashCode() + lastName.hashCode();
  h = HASH_MULTIPLIER * h + ((Integer)id).hashCode();
  return h;
  }
  

GRADING

• Turn in hard copies of your source code for all classes.
• Be ready to demonstrate the result and answer some questions about the lab assignment.