Description
In this assignment, you will implement a class named ExtendedAVLTree.
ExtendedAVLTree extends the AVLTree class to include the following methods:
Public static <K, V> AVLTree<K, V> clone(AVLTree<K,V> tree)
This class method creates an identical copy of the AVL tree specified by the
parameter and returns a reference to the new AVL tree. (3 marks)
For simplicity, we assume that K is int and V is String.
The time complexity of this method must be O(n), where n is the size of the input avl
tree. Put your running time analysis as comments after the code.
public static <K, V> AVLTree<K, V> merge(AVLTree<K,V> tree1,
AVLTree<K,V> tree2 )
This class method merges two AVL trees, tree1 and tree2, into a new tree, and
destroys tree1 and tree2.
The time complexity of your merge method must be O(m+n), where m and n are the
numbers of nodes of the two input AVL trees. Hint: 1. Create a sorted array list
containing all the entries in both avl trees in O(m+n) time. 2. Construct an avl tree
based on the sorted array list in O(m+n) time. Put your running time analysis as
comments after the code. (4 marks)
public static <K, V> void print(AVLTree<K, V> tree)
This class method creates a new window and prints the AVL tree specified by the
parameter on the new window. Each internal node is displayed by a circle containing
its key and each external node is displayed by a rectangle. You need to choose a
proper size for all the circles and a proper size for all the rectangles and make sure
that this method never prints a tree with crossing edges. (3 marks)
All the related classes are in the package net-datastructures-4-0. Please download netdatastructures-4-0, install it on your own computer and create the new class
ExtendedAVLTree in the same package.
You need to read the code of all the related classes in order to understand how the AVLTree
class works.
How to submit?
Follow this link: https://cgi.cse.unsw.edu.au/~give/Student/give.php. Do the following:
1. Use your z-pass to log in.
2. Select current session, COMP9024 and assn2.
3. Submit ExtendedAVLTree.java containing all the code, excluding the code in
datastructures-4-0.
Marking
The full mark of this assignment is 10. Marking will be based on the correctness, time
efficiency and readability of your code.
Deadline
No late submissions will be accepted.
References
1. http://docs.oracle.com/javase/tutorial/2d/index.html.
2. http://www.deitel.com/articles/java_tutorials/20050923/IntroductionToJava2D_Page6
.html.
3. http://docs.oracle.com/javase/tutorial/uiswing/components/frame.html.
