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

A binary tree of depth "d" is an almost complete binary tree, A binary tree...

A binary tree of depth "d" is an almost complete binary tree if  A) Every leaf in the tree is either at level "d" or at level "d-1"  B)  For any node "n" in the tree with a

Binary tree traversals, We have discussed already about three tree traversa...

We have discussed already about three tree traversal methods in the earlier section on general tree. The similar three different ways to do the traversal -inorder , preorder, and p

Tree structure, We would like to implement a 2-4Tree containing distinct in...

We would like to implement a 2-4Tree containing distinct integer keys. This 2-4Tree is defined by the ArrayList Nodes of all the 2-4Nodes in the tree and the special 2-4Node Root w

Algorithm for pre-order traversal, Hear is given a set of input representin...

Hear is given a set of input representing the nodes of a binary tree, write a non recursive algorithm that must be able to give the output in three traversal orders. Write down an

What is a range - a structured type in ruby, Range: A Structured Type in Ru...

Range: A Structured Type in Ruby Ruby has a numerous structured types, comprising arrays, hashes, sets, classes, streams, and ranges. In this section we would only discuss rang

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

Queue, what''s queue ?

what''s queue ?

An algorithm to insert a node in beginning of linked list, Q. Write down an...

Q. Write down an algorithm to insert a node in the beginning of the linked list.                         Ans: /* structure containing a link part and link part

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