CSE 222/505 – Homework 6


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Write a BinaryHeap class which extends BinaryTree class and implements Queue interface.
Note that you can override any BinaryTree class structure as you need. Give detailed
information (why do you need and how you modified) in your report about what you
Consider the case study in Chapter 4 in your book, “Simulate Strategy for Serving Airline
Passengers”. Implement the simulation with some modifications:
• Use 1 BinaryHeap instance instead of 2 PassengerQueue instances.
• Instead of using the frequentFlyerMax value, determine your passenger serving
strategy by assigning a priority value to each of your passengers. The BinaryHeap will
be constructed according to the priority values.
Consider the case study in Chapter 6 in your book, “Building a Custom Huffman Tree”. Write
the HuffmanTree class in the case study. Add encode method to the class structure.
Write a test program which creates a Huffman tree by reading freq.txt file. The file will
include a character and the frequency value separated by a space in each line. Add some
encode and decode operations to test your methods.
Implement a level-order traverse method for the third part of the second question in
Homework 5. Test your method.
– Write a main class for each question
– Don’t use any other third part library
– For any question firstly use course news forum in moodle, and then the contact TA.
– You can submit assignment one day late and will be evaluated over twenty percent (%20).
– Register github student pack and create private project and upload your projects into github.
– Your appeals are considered over your github project process.
– Use given CSE222-VM to develop and test your homeworks (your code must be working on
CSE222-VM), CSE222-VM download link will be given on Moodle.
– Implement clean code standarts in your code;
o Classes, methods and variables names must be meaningful and related with the
o Your functions and classes must be simple, general, reusable and focus on one topic.
o Use standart java code name conventions.
– Add all javadoc documentations for classes, methods, variables …etc. All explanation must be
meaningful and understandable.
– You should submit your homework code, javadoc and report to Moodle in a
studentid_hw#.tar.gz file.
– Use the given homework format including selected parts:
Detailed system requirements
The Project usecase diagrams (extra points)
Class diagrams x
Other diagrams
Problem solutions approach x
Test cases x
Running command and results
– No error handling : -50
– No javadoc documentation : -50
– No report : -90
– Disobey restrictions : -100
– Cheating : -200
– Your solution is evaluated over 100 as your performance.