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

Draw a flowchart that takes temperatures input, Write an algorithm in form ...

Write an algorithm in form of a flowchart that takes temperatures input over a 100 day period (once per day) and outputs the number of days when temperature was below 20C and numbe

Context sensitive f1 help on a field, In what ways we can get the context s...

In what ways we can get the context sensitive F1 help on a field?' Data element documentation. Data element additional text in screen painter. Using the process on help r

Multiple stacks in a single array, implement multiple stacks in an array an...

implement multiple stacks in an array and write different algorithms to perform operations on it

Linked list, create aset of ten numbers.then you must divide it into two s...

create aset of ten numbers.then you must divide it into two sets numbers which are set of odd numbers and set of even numbers.

Traversing a binary search tree, Binary Search Tree let three types of trav...

Binary Search Tree let three types of traversals by its nodes. They are: Pre Order Traversal In Order Traversal Post Order Traversal In Pre Order Traversal, we ca

Applications, Arrays are simple, however reliable to employ in more conditi...

Arrays are simple, however reliable to employ in more condition than you can count. Arrays are utilized in those problems while the number of items to be solved out is fixed. They

Program, What is a first-in-first-out data structure ? Write algorithms to...

What is a first-in-first-out data structure ? Write algorithms to perform the following operations on it – create, insertion, deletion, for testing overflow and empty conditions.

Time complexity, The  total  of  time  needed  by  an algorithm to run to i...

The  total  of  time  needed  by  an algorithm to run to its completion is termed as time complexity. The asymptotic running time of an algorithm is given in terms of functions. Th

Construction of a binary tree , Q. Construct a binary tree whose nodes in i...

Q. Construct a binary tree whose nodes in inorder and preorder are written as follows: Inorder : 10, 15, 17, 18, 20, 25, 30, 35, 38, 40, 50 Preorder: 20, 15, 10

File organization, Define File organization''s and it''s types

Define File organization''s and it''s types

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