Interested to Buy Any Domain ? << Click Here >> for more details...
I am given a sequential algorithm that does a routine search
on an unordered list. N = 20.
The probability that the value x does NOT appear in the list
is exactly 60%, and the probability that x DOES appear is 40%.
The 3 questions that I could not get were:
A) What is the avg number of element comparisons performed
when n = 20 and x does NOT appear in the List.
(my answer was 20, is this correct?)
B) What is the avg number of element comparisons peformed
when n = 20 and x DOES appear in the list?
C) What is the avg number of element comparisons performed
when n = 20. This should be a single number answer they said.
- 3 Answers
- 6431 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / guest
a) 20 worst case scenario so it will take N comparison
b) 10 average case scenario N/2 omparisons
c) 16 (20*0.6 + 10*0.4 = 16) as stated above
| Is This Answer Correct ? | 17 Yes | 1 No |
Answer / ranjit
The second answer is partially correct.
a) 20. It will take 20 comparisons to determine that x does not appear in the unordered list of size N.
b) Assuming that x is equally likely to be in any of the 20 positions in the list, the average number of comparisons will be (1 + 2 + ... + 20)/20 = 10.5.
c) 20*0.6 + 10.5*0.4 = 16.2
| Is This Answer Correct ? | 9 Yes | 0 No |
Answer / bond
A) What is the avg number of element comparisons performed
when n = 20 and x does NOT appear in the List. (my answer
was 20, is this correct?)
è I guess 12.
B) What is the avg number of element comparisons peformed
when n = 20 and x DOES appear in the list?
è I guess 8.
C) What is the avg number of element comparisons performed
when n = 20. This should be a single number answer they
said.
è I guess 8.
| Is This Answer Correct ? | 5 Yes | 10 No |
Explain Queue
How do you get placements?
Which algorithm is used in collections sort method?
How do you find the number of comparisons in bubble sort?
How would you implement two stacks using a single array?
If you are using c language to implement the heterogeneous linked list, what pointer type should be used?
Why do we use dynamic arrays?
What are the advantages and disadvantages of copyonwritearraylist?
Explain the Array
What do you mean by separate chaining?
Is Arraylist faster than Array? Why?
Define articulation point?
Windows 
