Exponential search, Computer Engineering

Assignment Help:

Exponential Search

Another alternative to variable size decrease-and-conquer search is known as exponential search. This algorithm begins searching at the beginning of the list. It then progressively tests at larger intervals (A[2],A[4],A[8], . . .) until a straddling range is found which may contain the search value. A binary search is then performed on only the suspect range to ?nd the ?nal index position.

ALGORITHM ExponentialSearch (A[0 . . . n - 1], k)

// A variable-size decrease and conquer search in an ordered list.
// INPUT : An array A[0 . . . n - 1] of ordered elements, and a search key k.
// OUTPUT : an index to the position of k in A if k is found or -1 otherwise.
1: set pos ← 2
2: while pos < n and A[pos] < k do
3: prev ← pos
4: pos ← pos  2
5: if pos > n - 1 then
6: pos ← n - 1
7: result ← BinarySearch(A[prev . . . pos], k)
8: if result = -1 then
9: return -1
10: else
11: return result + prev

Algorithm ExponentialSearch shows the pseudocode for this solution. Implement the algorithm.


Related Discussions:- Exponential search

What are common reason for error massages while copying file, Q. What are c...

Q. What are common reason for error massages while copying file? While copying files with copy, DOS in encounters any error, it displays a suitable error massage. The common re

Simulate a real life product development , The goal is to simulate a real l...

The goal is to simulate a real life product development and familiarize learners with the design process of a system, component, or process to meet desired requires within realisti

Determine condition how the output changed of JK flipflop, The output of a ...

The output of a JK flipflop with asynchronous preset and clear inputs is '1'. The output can be changed to '0' with which conditions ? Ans. Through applying J = 1, K = 1 and u

What is the difference between proc. sent by val and by ref, What is the di...

What is the difference between proc. sent BY VAL and By Ref? BY VAL: Alters will not be reflected back to the variable. By REF: Alters will be reflected back to that variab

user to enter the weight, A red and blue car were involved in a head-on co...

A red and blue car were involved in a head-on collision. The red car was at a standstill and the blue car was possibly  speeding. Eye witness video recorded suddenly following the

Java, differentiate between multitasking and multithreading in java

differentiate between multitasking and multithreading in java

Explain circuit switching versus packet switching, Explain difference of Ci...

Explain difference of Circuit switching versus Packet switching. Within circuit switching an end-to-end path is to be establishing before any data can be sent. Previously a con

Describe the vertical frequency or cycle, Q. Describe the Vertical Frequenc...

Q. Describe the Vertical Frequency or cycle? Like a Fluorescent lamp, the screen has to repeat same image many times per second to display an image to user. The frequency of th

Describe distributed object model, Question 1 Give a brief explanation on m...

Question 1 Give a brief explanation on message oriented middleware Question 2 Describe Distributed object model Question 3 Explain File systems in a distributed computing Env

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd