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# Data Structures :: Basic Concepts

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The OS of a computer may periodically collect all the free memory space to form contiguous block of free space. This is called

AConcatenation

BGarbage collection

CCollision

DDynamic Memory Allocation

Explanation:

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A mathematical-model with a collection of operations defined on that model is called

BAbstract Data Type

CPrimitive Data Type

DAlgorithm

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A linear collection of data elements where the linear node is given by means of pointer is called

Bnode list

Cprimitive list

DNone of these

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Representation of data structure in memory is known as:

Arecursive

Babstract data type

Cstorage structure

Dfile structure

Explanation:

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O(N) (linear time) is better than O(1) constant time.

ATRUE

BFALSE

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An ADT is defined to be a mathematical model of a user-defined type along with the collection of all ____________ operations on that model.

ACardinality

BAssignment

CPrimitive

DStructured

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An algorithm is made up of two independent time complexities f (n) and g (n). Then the complexities of the algorithm is in the order of

Af(n) x g(n)

BMax ( f(n),g(n))

CMin (f(n),g(n))

Df(n) + g(n)

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Time complexities of three algorithms are given. Which should execute the slowest for large values of N?

AO(N^1/2)

BO(N)

CO(log n)

DNone of these

Explanation:

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Ackerman's function is defined on the non-negative integers as follows

a(m,n) = n+1 if m=0
= a(m-1, 1) if m != 0, n=0
= a(m-1, a(m, n-1)) if m != 0, n0
The value of a (1, 3) is

A4

B5

C6

D7

Explanation:

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The indirect change of the values of a variable in one module by another module is called

Ainternal change

Binter-module change

Cside effect

Dside-module update

Explanation:

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