Arrays Questions

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61.

The total number of elements that can be stored in a string without increasing its current amount of allocated memory is called its:

A

Size

B

Length

C

Capacity

D

Maximum size

Correct Answer: C

None.

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62.

A double sub-scripted array declared as int a[ 3 ][ 5 ]; has how many elements?

A

15

B

13

C

10

D

8

Correct Answer: A

None.

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63.

Using square brackets ([]) to retrieve vector elements .............. perform bounds checking; using member function at to retrieve vector elements ................ perform bounds checking.

A

Does not, does not

B

Does not, does

C

Does, does not

D

Does, does

Correct Answer: B

None.

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64.

The largest element of an array index is called its .................

A

lower bound

B

range

C

upper bound

D

All of these

Correct Answer: C

None.

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65.

The information about an array that is used in a program will be stored in

A

dope vector

B

system table

C

symbol table

D

activation record

Correct Answer: A

None.

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66.

Which of the following expressions accesses the (i,j)th entry of an (m x n) matrix stored in column major form?

A

m x(j -1) + i

B

n x(m-i) + j

C

n x (i -1) + j

D

m x (n-j) + j

Correct Answer: A

None.

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67.

Sparse matrices have

A

higher dimension

B

many zero entries

C

many non-zero entries

D

none of the above

Correct Answer: B

None.

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68.

For a linear search in an array of n elements the time complexity for best, worst and average case are ......., ....... and ........ respectively

A

O(1),O(n) and O(n)

B

O(1), O(n) and O(n/2)

C

O(n), O(1), and O(n/2)

D

O(1), O(n) and (n-1/2)

Correct Answer: A

None.

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69.

The expression which accesses the (ij)th entry of am x n matrix stored in column majorform is

A

n x (i-1)+j

B

n x (m-i)+j

C

m x (n-j)+j

D

m x (j-1)+i

Correct Answer: D

None.

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70.

An object that can be used in accessing another object, is known to be

A

Pointer

B

Arrays

C

Structure

D

Reference

Correct Answer: A

None.

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