RE: DATA STRUCTURES TECHNICAL QUESTIONS

DATA STRUCTURES TECHNICAL QUESTIONS
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PART A
1.Write down the definition of data structures?
A data structure is a mathematical or logical way of organizing data in the memory that
consider not only the items stored but also the relationship to each other and also it is
characterized by accessing functions.
2. Give few examples for data structures?
Stacks, Queue, Linked list, Trees, graphs
3. Define Algorithm?
Algorithm is a solution to a problem independent of programming language. It consist of
set of finite steps which, when carried out for a given set of inputs, produce the corresponding
output and terminate in a finite time.
4. What are the features of an efficient algorithm?
Free of ambiguity
Efficient in execution time
Concise and compact
Completeness
Definiteness
Finiteness
5. List down any four applications of data structures?
Compiler design
Operating System
Database Management system
Network analysis
6. What is meant by an abstract data type(ADT)?
An ADT is a set of operation.A useful tool for specifying the logical properties of a
datatype is the abstract data type.ADT refers to the basic mathematical concept that defines the
datatype. Eg.Objects such as list, set and graph along their operations can be viewed as ADT's.
7.What are the operations of ADT?
Union, Intersection, size, complement and find are the various operations of ADT.
8.What is meant by list ADT?
List ADT is a sequential storage structure. General list of the form a1, a2, a3.…., an and the
size of the list is 'n'. Any element in the list at the position I is defined to be ai, ai+1 the successor
of ai and ai1 is the predecessor of ai.
9. What are the various operations done under list ADT?
Print list
Insert
Make empty
Remove
Next
Previous
Find kth
10.What is a Rational number?
A Rational number is a number that can be expressed as the quotient of two integers.
Operations on Rational number:
Creation of rational number from two integers.
Addition
Multiplication
Testing for equality.
11.What are the two parts of ADT?
Value definition
Operator definition
12.What is a Sequence?
A sequence is simply an ordered set of elements.A sequence S is sometimes written as the
enumeration of its elements,such as
S = <s0,s1,………..sn1>
If S contains n elements,then length of S is n.
13.Define len(S),first(S),last(S),nilseq ?
len(S) is the length of the sequence S.
first(S) returns the value of the first element of S
last(S) returns the value of the last element of S
nilseq :Sequence of length 0 is nilseq .ie., contains no element.
14.What are the four basic data types?
int,float,char and double
15.What are the two things specified in declaration of variables in C?
It specifies the amount of storage that must be set aside for objects declared with
that type.
How data represented by strings of bits are to be interpreted. 

