[Pak Youth] CS502 Today's 20 Solved n Unsolved Quiz (Date 21.05.2013)

Question # 1
A point p in 2-dimensional space is usually given by its integer coordinate(s)____________
Select correct option:
    p.x only
    p.y only
    p.x & p.z
    p.x & p.y    (p10)

Question # 2
Algorithm analysts know for sure about efficient solutions for NP-complete problems.
Select correct option:
    True    
    False    (p173)

Question # 3
Brute-force algorithm for 2D-Maxima is operated by comparing ________ pairs of points.
Select correct option:
    Two
    Some
    Most
    All    (p18)


Question # 4
In ____________ we have to find rank of an element from given input.
Select correct option:
    Merge sort algorithm
    Selection problem    (p34)
    Brute force technique
    Plane Sweep algorithm

Question # 5
In Heap Sort algorithm, if heap property is violated _________
Select correct option:
    We call Build heap procedure
    We call Heapify procedure    (answer)
    We ignore
    Heap property can never be violated


Question # 6
We can not make any significant improvement in the running time which is better than that of brute-force algorithm.
Select correct option:
    True
    False    (p92 Not Sure)

Question # 7
Upper bound requires that there exist positive constants c2 and n0 such that f(n) ____ c2n for all n <= n0
Select correct option:
    Less than
    Equal to or Less than        (p25 => for all n >= n0)
    Equal or Greater than
    Greater than


Question # 8
A RAM is an idealized algorithm with takes an infinitely large random-access memory.
Select correct option:
    True
    False    (p10 => A RAM is an idealized machine)

Question # 9
In simple brute-force algorithm, we give no thought to efficiency.
Select correct option:
    True    (p11)
    False


Question # 10
_________ is one of the few problems, where provable lower bounds exist on how fast we can sort.
Select correct option:
    Searching
    Sorting        (p39)
    Both Searching & Sorting
    Graphing

Question # 1 of 10 ( Start time: 07:00:32 PM ) Total Marks: 1

The number of accesses to any element of space is not counted for the running time calculation of algorithm.

Select correct option:

True

 False

Question # 2 of 10 ( Start time: 07:01:56 PM ) Total Marks: 1

The O-notation is used to state only the asymptotic ________bounds.

Select correct option:

Two Lower

Upper

Both lower & upper

Question # 3 of 10 ( Start time: 07:02:28 PM ) Total Marks: 1

 In analysis, the Upper Bound means the function grows asymptotically no faster than its largest term.

Select correct option:

True

 False

Question # 4 of 10 ( Start time: 07:03:40 PM ) Total Marks: 1

 Floor and ceiling are ____________ to calculate while analyzing algorithms.

Select correct option:

Very easy

Usually considered difficult

Question # 5 of 10 ( Start time: 07:05:04 PM ) Total Marks: 1 In Heap Sort algorithm, the maximum levels an element can move upward is _________

Select correct option:

Theta (log n)

Order (log n)

Omega (log n)

 O (1) i.e. Constant time

Question # 6 of 10 ( Start time: 07:06:23 PM ) Total Marks: 1

A point p in 2-dimensional space is usually given by its integer coordinate(s)____________ Select correct option:

p.x only p.y

only p.x & p.z

 p.x & p.y

Question # 7 of 10 ( Start time: 07:06:49 PM ) Total Marks: 1

Algorithm analysts know for sure about efficient solutions for NP-complete problems.

Select correct option:

True

 False

Question # 8 of 10 ( Start time: 07:07:23 PM ) Total Marks: 1

In Heap Sort algorithm, the total running time for Heapify procedure is ____________

 Select correct option:

 Theta (log n)

Order (log n)

 Omega (log n)

O (1) i.e. Constant time

Question # 9 of 10 ( Start time: 07:08:49 PM ) Total Marks: 1

Which may be stable sort:

Select correct option:

Bubble sort

Insertion sort

Both of above   Page 54

Selection sort

Question # 10 of 10 ( Start time: 07:09:37 PM ) Total Marks: 1

For the worst-case running time analysis, the nested loop structure containing one "for" and one "while" loop, might be expressed as a pair of _________nested summations.

Select correct option:

1

 2

3

 4

 

 

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