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

EME, How can i made Carnot engine

How can i made Carnot engine

Convergence mean with respect to e-commerce, What does the term convergence...

What does the term convergence mean with respect to E-commerce? Convergence with respect to e-commerce   The ability to leverage and integrate the several data sources and

What is random access memory, What is random access memory(RAM or MAIN MEMO...

What is random access memory(RAM or MAIN MEMORY) and mention its types? The main memory in the central storage unit in a computer system. It is relatively large and fast memory

Illustrate the accumulator architecture, Accumulator Architecture: An accu...

Accumulator Architecture: An accumulator is anespecially designated register which supplies one instruction operand and receives result. Instructions in such machines are usually

What is application analysis, What is application analysis? The purpose...

What is application analysis? The purpose of analysis is to understand the problem so that a correct design can be constructed. The application analysis focuses on major applic

Explain magnetic read and write mechanisms, Q. Explain Magnetic Read and Wr...

Q. Explain Magnetic Read and Write Mechanisms? Data are recorded on and then retrieved from disk via a conducting coil called the head. In numerous systems there are two heads,

Assessing heuristic searches , Assessing Heuristic Searches: Given a p...

Assessing Heuristic Searches: Given a particular problem you want to build an agent to solve, so there may be more than one way of justifying it as a search problem, more than

What is reflection, What is Reflection?  It extends the benefits of met...

What is Reflection?  It extends the benefits of metadata by permitting developers to inspect and use it at runtime. For example, dynamically verify all the classes contained in

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