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NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
OCTOBER 2019 EXAMINATION

COURSE CODE: CIT341
COURSE TITLE: DATA STRUCTURES
COURSE CREDIT: 3 UNITS
TIME ALLOWED: 2½ HOURS
INSTRUCTION: ANSWER QUESTION 1 AND ANY OTHER FOUR (4) QUESTIONS


1(a) Describe the broad classes of Data Structures [5 marks]
1(b) i What is a digraph? (2 marks)
1(b) ii. Mention the main primitive operations of a list data structure. [4 marks]
1c. Analyse any 3 components of class declarations (3 marks)
1d. Discuss the greedy algorithm approach (4 marks)
1e. Give the four (4) classifications of simple data types with examples (4 marks)


2(a) Evaluate two (2) primary categories of data structures [9 marks]
2(b) Briefly describe the term Data Structure [3 marks]


3(a) What is garbage collection? Illustrate how and when garbage collection can be implemented(6 marks)
3(b) Examine the components of class declarations (6 marks)


4(a) Explain the following i) Queue ii) Arrays [5 marks]
4(b) Explain two (2) applications of the following in computer operation [5 marks]
4c. When is sorting algorithm said to be stable? (2marks]


5(a) Examine the benefits of binding code into individual software objects? (8 marks)
5b. Describe the uses of a Stack? (4 marks)


6(a) What are the components of field declarations ? (3 marks)
6(b) Enumerate the three (3) main kinds of variables (3 marks)
6(c) Discuss the applications of stack data structure? (6 marks)


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