Array vs. ordinary variable, Data Structure & Algorithms

Assignment Help:

Q. Describe what do you understand by the term array? How does an array vary from an ordinary variable? How are the arrays represented in the specific memory?                                    

Ans.

Array Vs. Ordinary Variable is explained as follows

Array is made from the similar data structure that exists in any language. Array is the set of similar or alike data types. Array is the collection of similar or alike elements. These similar or alike elements could be all int or all float or all char etc. Array of char is called as string. All elements of the given array should be of same type. An array is finite ordered set of the homogeneous elements. The number of elements in the array is pre- determined.

For example.  Ordinary variable: - int a

Array:      -      int a[10]

An ordinary variable of a simple data type can save a single element only

Representation of Array in memory is shown below

Assume a be a 2 dimensional m x n array

 

 

Col 0

Col 1

Col 2

 

Row 0

 

a00

 

a01

 

a02

 

Row 1

 

a10

 

a11

 

a12

 

Row 2

 

a20

 

a21

 

a22

 

Though  a  is  pictured  as  a  rectangular pattern  with  in  row  and  n  column  it  is represented in memory or a particular location by a row of m x n  elements. Sequential memory locations the element can be saved in row major order.

Column major order is explained as follows:- the elements are saved column by column i.e. m elements of the 1st column is saved in first m locations, elements of the 2nd column are saved in next m location and so on..

1545_column major.png

Row major order is shown below:-

The elements are saved row by row ie. N elements of the 1st row are saved in 1st n location, elements of 2nd row are saved in next n location, and so on

1808_row major.png


Related Discussions:- Array vs. ordinary variable

Program, circular queue using c

circular queue using c

Push and pop operations, Q. Explain that how do we implement two stacks in ...

Q. Explain that how do we implement two stacks in one array A[1..n] in such a way that neither the stack overflows unless the total number of elements in both stacks together is n.

The search trees are abstract data types, the above title please send give ...

the above title please send give for the pdf file and word file

Process of analysis, The objective analysis of an algorithm is to determine...

The objective analysis of an algorithm is to determine its efficiency. Efficiency is based on the resources which are used by the algorithm. For instance, CPU utilization (Ti

Hash function, Q. Define the graph, adjacency matrix, adjacency list, hash ...

Q. Define the graph, adjacency matrix, adjacency list, hash function, adjacency matrix, sparse matrix, reachability matrix.

Array implementation of lists, In the array implementation of the lists, we...

In the array implementation of the lists, we will use the array to hold the entries and a separate counter to keep track of the number of positions are occupied. A structure will b

Optimization Methods, Optimal solution to the problem given below. Obtain t...

Optimal solution to the problem given below. Obtain the initial solution by VAM Ware houses Stores Availibility I II III IV A 5 1 3 3 34 B 3 3 5 4 15 C 6 4 4 3 12 D 4 –1 4 2 19 Re

FIRST function in the compiler construction, I need a recursive algorithm t...

I need a recursive algorithm to implement the FIRST function to any grammar

Small program on Algorithms , Objective The goal of this project is to ext...

Objective The goal of this project is to extend and implement an algorithm presented in the course and to apply notions introduced by the course to this program/algorithm. The ass

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