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

How to get the column count of a report, How to get the column count of a r...

How to get the column count of a report? SY-LINSZ system variable gives the column count (line size) and SY-LINCT for line count.

Example on cyclic distribution of data, Q. Example on Cyclic Distribution o...

Q. Example on Cyclic Distribution of data? !HPF$ PROCESSORS P1(4) !HPF$ TEMPLATE T1(18) !HPF$ DISTRIBUTE T1(CYCLIC) ONTO P1 The result of these instructions is display

What do you mean by prototype, Q. What do you mean by Prototype? A prot...

Q. What do you mean by Prototype? A prototyping approach lay emphasis on the construction model of a system. Designing and building a scaled-down though functional version of a

Example multi-layer ann with sigmoid units, Example Multi-layer ANN with Si...

Example Multi-layer ANN with Sigmoid Units: However we will concern ourselves here that with ANNs containing only one hidden layer and as this makes describing the backpropaga

Sosail studies, whitch goods did the new england colonies exportto england ...

whitch goods did the new england colonies exportto england and what did they get in return

Define a formal system, Q. Define a Formal System? A Formal System is o...

Q. Define a Formal System? A Formal System is one which is planned in advance and is used according to schedule. In this system procedures and policies are documented well in a

Advantage of booth and restoring division algorithm, Describe the advantage...

Describe the advantage of using Booth algorithm? Ans:  a) It achieves efficiency in the number of additions needed when the multiplier has a few large blocks of 1's. b) It

Page translation table, Make a page translation table the meets the require...

Make a page translation table the meets the requirements of the virtual memory system given below.  Suppose page (and frame) sizes of 20 with pages 0 by 3 in logical memory and fra

Write a program to check give word is a palindrom or not, Write a program t...

Write a program to check whether a given word is a palindrome or not? # include # include void main() { char word[10]; int length=0,mid,count=0; clrscr();

Bounded rationality in decision making, Q.What do you mean by the term 'bou...

Q.What do you mean by the term 'bounded rationality in decision making'? Maximizing the outcomes of a decision is an ideal stage. Habitually it is an impossible thing. The caus

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