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# CS502 -1st Assignment Due Date: 10th May, 2018

Fundamentals of Algorithms (CS502)

Assignment # 01

Spring 2018

Total marks = 20

Lectures Covered: This assignment covers Lecture # 1 to 7.

Objectives:

Objectives of this assignment are:

• To understand line by line analysis of an algorithm
• To understand how to calculate running time of an algorithm
• To perform comparison of different algorithms

Instructions:

Please read the following instructions carefully before solving & submitting the assignment:

1. The assignment will not be accepted after due date.
2. Zero marks will be awarded if the assignment does not open or the file is corrupt.
3. The assignment file must be an MS Word (.doc/.docx) file format; Assignment will not be accepted in any other format.
4. Zero marks will be awarded if assignment is copied (from other student or copied from handouts or internet).
5. Zero marks will be awarded if Student ID is not mentioned in the assignment file.

For any query about the assignment, contact only at CS502@vu.edu.pk

Please do not post queries related to assignment on MDB.

Question # 1:                                                                              10   Marks

For the following code segment, provide line-by-line analysis and construct function T(n) that give the runtime of this code as a function of "n".  Also determine the big-O for this code segment.                 [Marks: 5+3+2]

Code segment                                                  Cost

i = 1

j = 1

k = 1

while (i <= n)

i = i + 1

while (j < n)

a = 2 + g

j = j + 1

if (k <= n)

a = 2

else

a = 3

Question # 2:                                                                         5   Marks

Which of the following two functions is faster?

1. f1 = 10n2
2. f2 = n3

Question # 3:                                                                                  5   Marks

In the context of 2D Maxima problem, Brute Force algorithm runs in Θ(n2) time and Plane-Sweep algorithm runs in Θ(nlog2n) time. For n = 500,000, if Plane-Sweep takes 1 second, how much time (in hours) Brute Force algorithm will take? Calculate and show all the steps.

Note: Base of log is 2 (e.g. log210 = 3.321928095)

Good Luck

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