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

Design a binary tree, (a) Suppose that t is a binary tree of integers (that...

(a) Suppose that t is a binary tree of integers (that is, an object of type BinTree of Int.) in the state shown in Figure 3.   Give the vectors returned by each of the f

Searhing and sorting algorithms, how I can easily implement the bubble,sele...

how I can easily implement the bubble,selection,linear,binary searth algorithms?

Draws a rectangular grid algorithms, Prepare a GUI called Hotplate GUI that...

Prepare a GUI called Hotplate GUI that holds a central panel that draws a rectangular grid that represents Element objects which should be held in a 2-dimensional array. The applic

Find longest repeat prefix of string - linear time algorithm, 1. A string s...

1. A string s is said to be periodic with a period α, if s is α k for some k > 2. (Note that α k is the string formed by concatenating k times.) A DNA sequence s is called a tand

A Booth''s, Draw a flowchart of a Booth''s multiplication algorithm and exp...

Draw a flowchart of a Booth''s multiplication algorithm and explain it.

Values are automatically assigned to those array elements, What values a...

What values are automatically assigned to those array elements which are not explicitly initialized? Garbage values are automatically assigned to those array elements that

Sparse matrix, memory address of any element of lower left triangular spars...

memory address of any element of lower left triangular sparse matrix

Brute force, Determine the number of character comparisons made by the brut...

Determine the number of character comparisons made by the brute-force algorithm in searching for the pattern GANDHI in the text

Euclidean algorithm, The Euclidean algorithm is an algorithm to decide the ...

The Euclidean algorithm is an algorithm to decide the greatest common divisor of two positive integers. The greatest common divisor of N and M, in short GCD(M,N), is the largest 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