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

C++.., how to swap to nunbers

how to swap to nunbers

How are standard query operators useful in linq, Standard Query Operators i...

Standard Query Operators in LINQ can be used for working with collections for any of the following and more. 1. Get total count of elements in a collection. 2. Order the resu

What is the dissimilarity between a lens and a mirror, Q. What is the dissi...

Q. What is the dissimilarity between a lens and a mirror? Answer:- A mirror is a reflective surface that light passes through the glass and hits the silver backing reflect

Describe the difference between cache and virtual memory, Question 1: (...

Question 1: (a) What do you meant by an expert system? (b) Describe benefits of the EDI. (c) Describe what you understand by: (i) File Infectors (ii) Boot Sect

What are the different types of bios, The  most common types are the AWARD,...

The  most common types are the AWARD,AMI, AND phoenix

Assignment for statical natural language processing, Hi I study master of ...

Hi I study master of computer science I have assignment for subject statical natural language processing . I need solved due date on 6 May2014 at 11 pm Australia time I need yo

What is scenarios, Scenarios encapsulate the Vuser Groups and scripts to be...

Scenarios encapsulate the Vuser Groups and scripts to be implemented on load generators at run-time. Manual scenarios can deal out the total number of Vusers between scripts bas

Define a B- tree of order m, Define a B tree of order m. B Tree of orde...

Define a B tree of order m. B Tree of order m  A balanced multiway search tree of order m in which every non root node having at least m/2 keys is known as a B-Tree of order

What is a demultiplexer, What is a demultiplexer? Ans: Demultiplex...

What is a demultiplexer? Ans: Demultiplexer: This is a logic circuit which accepts one data input and distributes this over some outputs. This has one data input, m selec

Error detection mechanism must be in-built, Error detection mechanism may i...

Error detection mechanism may include checking mechanical and data communication errors. These errors must be reported to processor. The illustrations of kind of mechanical errors

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