Representation of records, Data Structure & Algorithms

Assignment Help:

Records are mapped onto a computer store by simply juxtaposing their elements. The address of a component (field) r relative to the origin address of the record r is named the field'si offset k. It is describeded as

k  =  si 1 + s2 + ... + si-1 k0 = 0

where s is the size (in words) of the j-th element. We now realize that the fact that all elements of an array are of same kind has the welcome consequence that  k = i×s. The generality of the record structure does unfortunately not give such a simple, linear method for offset address computation, and it is therefore the best reason for the need that record elements be selectable only by fixed identifiers. This restriction has the available benefit that the respective offsets are find at compile time. The assigning greater efficiency of record field access is well-known.

The method of packing can be beneficial, if several record elements can be fitted into a single storage word. Since offsets are computable by the compiler, the offset of a field packed within a class can also be described by the compiler. This seems that on many computers packing of records causes a deterioration in access efficiency considerably lesser than that caused by the packing of arrays.

 

1155_Records.png


Related Discussions:- Representation of records

Multiqueue, data structure for multiqueue

data structure for multiqueue

Array and two-dimensional array, Q. Describe the term array.  How do we rep...

Q. Describe the term array.  How do we represent two-dimensional arrays in memory?  Explain how we calculate the address of an element in a two dimensional array.

The two famous methods for traversing, The two famous methods for traversin...

The two famous methods for traversing are:- a) Depth first traversal b) Breadth first

Create a function to show data structure, Given a number that is represente...

Given a number that is represented in your data structure, you will need a function that prints it out in base 215 in such a way that its contents can be checked for correctness. Y

Matrix stored in memory, Method to measure address of any element of a matr...

Method to measure address of any element of a matrix stored in memory. Let us consider 2 dimensional array a of size m*n further consider that the lower bound for the row index

Linked list, How to creat ATM project by using double linked list?

How to creat ATM project by using double linked list?

Various passes of bubble sort, Q. Show the various passes of bubble sort on...

Q. Show the various passes of bubble sort on the unsorted given list 11, 15, 2, 13, 6           Ans: The given data is as follows:- Pass 1:-     11   15   2     13

#binary search, Ask question #Minima binary search tree is used to locate t...

Ask question #Minima binary search tree is used to locate the number 43 which of the following probe sequences are possible and which are not? explainum 100 words accepted#

Program on radix sort., Write a program that uses the radix sort to sort 10...

Write a program that uses the radix sort to sort 1000 random digits. Print the data before and after the sort. Each sort bucket should be a linked list. At the end of the sort, the

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