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

Which sorting algorithm is adaptable to singly linked list, Which sorting a...

Which sorting algorithm is easily adaptable to singly linked lists? Simple Insertion sor t is easily adabtable to singly linked list.

Write an algorithm to measure daily temperatures, A geography class decide ...

A geography class decide to measure daily temperatures and hours of sunshine each day over a 12 month period (365 days) Write an algorithm, using a flowchart that inputs tempera

Branch and Bound method, give some examples of least cost branch and bound ...

give some examples of least cost branch and bound method..

Importance of game theory to decisions, Question: (a) Discuss the impor...

Question: (a) Discuss the importance of game theory to decisions. (b) Explain the following: (i) saddle point, (ii) two-person zero-sum game. (c) Two leading ?rms, ABC Ltd a

Post order traversal, Post order traversal: The children of node are vi...

Post order traversal: The children of node are visited before the node itself; the root is visited last. Each node is visited after its descendents are visited. Algorithm fo

Algorithm to merge two sorted arrays with third array, Q. Write down an alg...

Q. Write down an algorithm to merge the two sorted arrays into the third array. Do  not perform the sort function in the third array.                           Ans: void m

Data Warehousing, Assume you are in the insurance business. Find two exampl...

Assume you are in the insurance business. Find two examples of Type 2 slowly changing dimensions in that business. As an analyst on the project, write the specifications for applyi

Define big theta notation, Define Big Theta notation Big Theta notati...

Define Big Theta notation Big Theta notation (θ) : The upper and lower bound for the function 'f' is given by the big oh notation (θ). Considering 'g' to be a function from t

Abstract data type-tree, Definition: A set of data values & related operati...

Definition: A set of data values & related operations that are accurately specified independent of any particular implementation. As the data values and operations are described

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