Search on a hashed file, Data Structure & Algorithms

Assignment Help:

Write a program to simulate searching over a hashed file, with different assumptions for the sizeof file pages.Write a program to perform equality search operations on the hashed file produced by yourwHash program in previous section. The executable name of this program must be sHash and it mustbe able to be executed using the command:

> ./sHash search_2013 hashed pagesize

 

where search_2013 is the name of the file containing the ID keys to be searched for; hashedis the output file of your wHash program; and pagesize is an integer value that specifies thesize of the disk page that you are simulating. (Note: the pagesize parameter that you specifyfor searching should match the pagesize parameter that you used for constructing the hashedfile, otherwise your results will not make sense.)

Your program must take advantage of the assumption that hashed is a file whose structure has been created by hashing on the ID key. Your program should read in required parts of thefile, one "page" at a time. For example, if the pagesize parameter is 100, your program shouldfetch 100 records in a single read from disk. These can then be scanned, in-memory, for amatch.

If a match is found, the program must print the matching record to stdout. If no match is found, a suitable message should be printed. In addition, the program must output the total timetaken to do all the search operations in milliseconds to stdout. For example, if the time takento do the reading is 123:45 ms, the output would be:

Time: 123.45 ms


Related Discussions:- Search on a hashed file

FOLDING METHOD, 12345 SOLVE BY USING FOLDING METHOD

12345 SOLVE BY USING FOLDING METHOD

Deletion of a node from a binary search tree, The algorithm to delete any n...

The algorithm to delete any node having key from a binary search tree is not simple where as several cases has to be considered. If the node to be deleted contains no sons,

Graph, explain the prims''s algorithm with suitable example?

explain the prims''s algorithm with suitable example?

Complexity of an algorithm, compare two functions n and 2n for various valu...

compare two functions n and 2n for various values of n. determine when second becomes larger than first

Estimate cost of an optimal diapath, Normally a potential y satisfies y r ...

Normally a potential y satisfies y r = 0 and 0 ³ y w - c vw -y v . Given an integer K³0, define a K-potential to be an array y that satisfies yr = 0 and K ³ y w - c vw -y v

Write an algorithm for binary search., Write an algorithm for binary search...

Write an algorithm for binary search. Algorithm for Binary Search 1.  if (low> high) 2.  return (-1) 3.  Mid = (low + high)/2 4.  if ( X = = a[mid]) 5.  return (mid); 6.

Limitation of binary search, Limitation of Binary Search: - (i)  The co...

Limitation of Binary Search: - (i)  The complexity of Binary search is O (log2 n). The complexity is similar irrespective of the position of the element, even if it is not pres

Just a quick couple questions, I was wanting to know where this web site wa...

I was wanting to know where this web site was created. My second question is,,, are the online tuters accredited teachers? If they are, are they only working for the website or ma

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