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

Boundary tag method in context of dynamic memory management, Q. How can we ...

Q. How can we free the memory by using Boundary tag method in the context of Dynamic memory management?

Write an algorithm inputs speed of cars using pseudocode, Write an algorith...

Write an algorithm by using pseudocode which: Inputs top speeds of 5000 cars Outputs fastest speed and the slowest speed Outputs average speed of all the 5000 cars

Algorithm, implement multiple stacks in a single dimensional array. write a...

implement multiple stacks in a single dimensional array. write algorithm for various stack operation for them

Recursive function, The location of a node in a binary search tree is defin...

The location of a node in a binary search tree is defined as a string such as LLRRL, which represents the node that you find by starting at the root, and traversing Left, traverse

Efficient algorithms.., implementation of fast fourier transforms for non p...

implementation of fast fourier transforms for non power of 2

What are the languages which support assertions, What are the languages whi...

What are the languages which support assertions Languages which support assertions often provide different levels of support. For instance, Java has an assert statement which t

Complexity of an algorithm, Q. Explain the complexity of an algorithm?  Wha...

Q. Explain the complexity of an algorithm?  What are the worst case analysis and best case analysis explain with an example.

Consistent heuristic function - graph search, Consistent Heuristic Function...

Consistent Heuristic Function - Graph Search Recall the notions of consistency and admissibility for an A* search heuristic. a. Consider a graph with four nodes S, A, B, C,

Explain about hidden-surface, Explain about Hidden-surface Hidden-line...

Explain about Hidden-surface Hidden-line removal refers to wire-frame diagrams without surface rendering and polygonal surfaces with straight edges. Hidden-surface removal ref

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