Exam (elaborations)
COS2611 EXAM PACK 2023
- Course
- Institution
QUESTIONS AND ANSWERS
[Show more]
Seller
Follow
brighttutor10
Reviews received
Content preview
COS2611EXAM
PACK 2023
QUESTIONS WITH ANSWERS
,COS2611
EXAM
PACK 2023
LATEST QUESTIONS
AND ANSWERS
For queries or any assignment help
Email: musyokah11@gmail.com
, MCQ
October 2017
1. Which of the following functions is ordered by growth rate from largest to smallest?
ORDERS OF MAGNITUDE (small to large): 1, N, log , Nlog , N , N , 2 , N!
a. Nlog , 2 , N , 2
b. 2 , Nlog , N , 2
c. 2 , N , Nlog , 2
d. 2 , 2 , N , Nlog
e. 2 , N , 2 , Nlog
2. What is the running time of the following code fragment?
for (int i = 0; i < 5n; i++) 1; 5N + 1; 5N = 10N + 2
sum++; O(N)
a. O(1)
b. O(N)
c. O(log )
d. O(Nlog )
e. O(N )
Questions 3, 4 and 5 refer to the following code fragment:
1. for (int j = 1; j <= 10000; j *= 2) 1; 10001; 10000/2 = O(1)
2. for (int k = 1; k <= n; k++) 1; N + 1; N = 2N + 2
3. sum++; (2N + 2) ∗ 1
4. for (int p = n; p > 1; p /= 2) 1; N + 1; log= N + 2 + log
5. for (int q = 0; q < 500; q++) 1; 501; 500 = O(1)
6. sum--; (log + N + 2) ∗ 1
3. How many times is statement 3 executed?
a. O(N)
b. O(N )
c. O(N )
d. O(Nlog )
e. O(log )
4. How many times is statement 6 executed?
a. O(N)
b. O(N )
c. O(N )
d. O(log )
e. O(Nlog )
5. What is running time of the entire code fragment?
a. O(N)
b. O(N )
c. O(N )
d. O(log )
e. O(Nlog )
6. An algorithm takes 5 seconds for an input size of 10. How long will it take for an input size of 20 if the
running time is(NO )?
∗
5sec = 10 ; 𝑥sec = 20 𝑥sec =
a. 2s
b. 4s
c. 30s
d. 40s
e. None of the above
7. An algorithm takes 5 seconds for an input size of 500. How large a problem can be solved in 50 seconds
(N)?
if the running time is linear O
∗
5sec = 500; 50sec = 𝑥 𝑥 =
a. 50
b. 500
c. 5000
, d. 50000
e. None of the above
Consider the following list where each node is of type nodeType and answer questions 8, 9 and 10.
8. What is the output of the following C++ code?
while (p->link != NULL)
{
p = p->link->link;
q = q->link;
cout << q->info << ", ";
}
START(p: 10, q: 25); p:q:25,60; p: 50,
q: 50; p: 70,
q:24
a. 50, 60, 70,
b. 25, 50, 60, 70,
c. 60, 50, 25,
d. 25, 60, 50,
e. None of the above
9. What is the output of the following C++ code?
while (p->link != NULL)
{
p = p->link->link;
q = q->link;
cout << q->link->info << ", ";
}
START(p: 10, q: 25
); p: 25, q: 60,
q → link = 50; p, q: q50,
→ link = 24; p: 70, q:q→link=70
24,
a. 50, 24, 25,
b. 60, 24, 70,
c. 25, 50, 70,
d. 50, 24, 70,
e. None of the above
10. What is the output of the following C++ code?
while (q != NULL)
{
p = p->link;
cout << q->info << ", ";
q = p->link->link;
}
START(p: 10, q: 25
) ; p: 20,
q → info: 25
, q: 60; p: 25,
q → info: 60
, q: 50; p: 60,
q → info: 50
, q: 24; p: 50,
q → info: 24
, q: 70
a. 25, 60, 50,
b. 25, 60, 50, 24,
c. 20, 60, 50, 24, 70,
d. 25, 60, 50, 24, 70,
e. None of the above
May 2017
1. What is the Big-Oh value for the following function: 3n + 2n ++nlog
6n ?
a. O(N )
b. O(N )
c. O(N )
d. O(N )
e. O(Nlog )
2. What is the running time for the following code fragment?
int sum = 0; 1
int i = 2; 1
while (i < n) N+1
{
sum += i; N
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller brighttutor10. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $2.50. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now