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 vectored interrupts, What are vectored interrupts? To decrease...

What are vectored interrupts? To decrease the time involved in the polling process, a device requesting an interrupt may recognize itself directly to the processor. Then the pr

Scanners, A Scanner is a device which allows you to capture photographs or ...

A Scanner is a device which allows you to capture photographs or drawings or text from tangible sources (paper or slides etc.) in electronic form. Scanners work by detecting differ

What is skew, What is skew? Clock Skew: In circuit design, clock ske...

What is skew? Clock Skew: In circuit design, clock skew is a phenomenon within synchronous circuits wherein the clock signal (sent through the clock circuit) arrives at dive

Describe the term- systems analysis, Describe the term- Systems Analysis ...

Describe the term- Systems Analysis A systems analysis team is every so often brought in to improve on an existing system. Often this involves moving from a paper-based filing

Perform multiplication with showing content of accumulator, Perform multipl...

Perform multiplication with showing the contents of accumulator, B register and Y register during each step. (Accumulator, B, Y are 4-bit registers) B=06 Y=02

How many times browser on each computer has contacted server, Write a CGI p...

Write a CGI program that displays a count of how many times a browser on each computer has contacted the server. echo Content -type: text /html echo N=$QUERY_STRING Ec

Message passing model, In the message-passing model, there exists a set of ...

In the message-passing model, there exists a set of tasks that use their own local memories during computation. Multiple tasks can reside on the similar physical machine as well ac

Define thread cancellation and target thread, Define thread cancellation & ...

Define thread cancellation & target thread.  The thread cancellation is the task of terminating a thread before it has done. A thread that is to be cancelled is often referred

Crafting an isa - computer architecture, Crafting an ISA: We will l...

Crafting an ISA: We will look at some decisions facing an instruction set architect, and In the design of the MIPS instruction set how those decisions were made. MIPS

Explain about the client/server computing, Explain about the Client/Server ...

Explain about the Client/Server Computing? Although there are different various configurations, various hardware and software platforms and even various network protocols into

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