MU Computer Engineering (Semester 3)
Data Structures
December 2011
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) What is recursion ? State its advantages and disadvantages.
5 M
1 (b) What is AVL tree ? Explain with example.
5 M
1 (c) (i) Abstract data type
2 M
1 (c) (ii) Binary tree
2 M
1 (C) (iii) Graph
1 M
1 (d) Construct Huffman code for C++JAVA
5 M

2 (a) Explain different types of tree traversal techniques. Explain each with suitable example.
10 M
2 (b) Explain different ways to represent a graph. Give example.
10 M

3 (a) Write a program to implement queue using array.
10 M
3 (b) Explain any two applications of stack using a program.
10 M

4 (a) Explain the working of merge sort and sort the following elements :
50 , 10 , 20 , 40 , 5 , 60 , 35
10 M
4 (b) Explain circular and priorty queue.
10 M

5 (a) Write a program to create a doubly linked list and perform the following operations
(i) Insert into the list
(ii) Delete from the list
(iii) Search for a data
9 M
5 (b) Write a Java program that reads a text file and counts all occurrences of a word.
11 M

6 (a) What is hashing ? Hash the following in a table size of 11. Use any two collision techniques.
20, 5 ,10, 11, 22, 33, 40, 50, 30, 51, 31
10 M
6 (b) Construct binary tree for inorder and postorder traversal sequence given below.
Inorder = INFORMATION
Postorder= INOFMAINOTR
10 M

Write short notes on any four of the following :-
7 (a) Comparison of sorting algorithm
5 M
7 (b) B+ trees
5 M
7 (c) Binary search
5 M
7 (d) Prefix and postfix forms of expressions.
5 M
7 (e) Asymptotic notation
5 M
7 (f) Tower of Hannoi
5 M



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