Can anyone explain me simple meaning of array and how it can be used.

Question

Please want in simple ways that I can understand

Answer 1

Array is a container that holds fixed number of values of the same type, each having a numerical index.

Answer 2

Suppose you have to store values of 5 student marks then you can do this by the following normal variable declaration , cannot it?

var s1 = 67;
var s2 = 45;
var s3 = 77;
var s4 = 87;
var s5 = 55;

but when you have to store marks of 100 students then what will you do, let's see

var s = new Array(100); //Declared an array having size 100

var s[0] = 67; //Storing in first element
var s[1] = 45;//Storing in second element
var s[2] = 77;
var s[3] = 87;
var s[4] = 55;
var s[5] = 66;
var s[6] = 84;
...
....
.....
var s[99] = 56;//Storing in last element

Now storing values on and on is too frustration na,
let's have a look -

/////////////////////////////////////////////////////////////////////
for(var i=0;I<s.length;i++)
{
var marks = prompt("What's Marks of " + i+1 + " Student ?")
s[i] = marks;
}
////////////////////////////////////////////////////////////////////

I hope this is really amazing illustration on the ground of skill.....OK Dear Miller, isn't it ?

A/c to Definition
Array is an object in Java Script that is used to store many values of same data type in a single variable.

Answer 3

An array is a data structure that contain data of the same type and occupy contiguous memory spaces.

Answer 4

An array can be defined as a collection of values of similar data types..
You can declare an array by first typing the data type and then putting it in a variable
For example:the
int a[]= new int[10];
The number within the big brackets is the size of the array i.e the number of elements the array is holding..

Like if I found this helpful..

Answer 5

you can think array as a variable or a container with multiple values and each value can be accessed with an index number

Answer 6

array is a collection of values with similar datatypes or collection of homogenous data

Answer 7

array is a collection of elements of similar datatype
in java array is declared as for giving dynamic values to array elements....
datatype array_name []=new datatype [size_of_array]
for static values of array elements....
datatype array_name []={1,2,3,4}

Answer 8

An array is simply a list of objects or variables. If there were no arrays, then each array object would be a separate variable. It can be used to sort things together. You can make a lot of things with arrays.

Answer 9

A book is an array containing a set number of items, ie: pages. These pages all go in order, one after another. There is a definite beginning and end.

Answer 10

arrays are identified by [ ] . Ie.. Int a[0] =5.
for storing large number of elements of the same datatype either be int or float etc.
rather than declaring one by one element with that same data type .

Answer 11

An array is a data structure!

Answer 12

A variable is an allocation of memory ...a address in memory ....a value is a name pointing to that address...an array is a data structure that allows to aggregate variables together using a value key pair

Answer 13

when you declare an array, the computer knows to set aside a number of memory locations equal to the size you declared. it knows they are a list of sorts. this ability to tell the computer to make a list is called a data structure. so if you say int [ ] array = array int (5), the computer sets aside 5 memory locations that will all hold integer values. this way you don't have to add them all one at a time.

Answer 14

let's say it is a box with many compartments with different numbers. In each compartment, you can keep different things and ask the computer to take out a thing for you by telling it the compartment number.

Answer 15

Array would be like a storage bin with many different compartments containing the same types of things. The first compartment starts at zero, the second 1 and so on...

Answer 16

An Array is a linear collection of data of same type in classical languages like C/Java. But in JavaScript an Array is a Object and capable of holding any type of data!

Answer 17

An array is like one of those "pill sorters" that older folks use to keep their medication(s) straight.

There is a separate pocket for each 'day'. (in this case the "day" is the "index")

Assuming that Sunday is day "0".
So an array of:

$pills = array (sunday => "cholesterol", monday => "Blood Pressure", tuesday => "viagra" );

echo $pills[sunday] ~ would return "cholesterol"
echo $pills[tuesday] ~ would return "viagra" (party day!!)

Answer 18

Array Is Nothing But Collection Of Multiple Values Of Similar Data type
it is Used when Large Number of Data is To Be Executed

Answer 19

when you have avalue you can store it in a variable. If you need to store more values ex. 100 values you can create an array instead of 100 variables

int x=3; //variable
int arr []={4, 5, 6, 8, 9,........ } //arrsy of values

Answer 20

suppose you have three bottles of cola, juice and gatorade, and in order to handle it all at once you need a box for container. but you are thirsty and you need to drink water, youll take a look and get the water, but then you worked out and needed gatorade and so you take a look and get gatorade and so on.

the data is the three bottles, the array is the box container. in order to access it you need to take a look at its position. once you get it you can access the data.

basically it holds a data that can be reused in every function of your program provided it was set as public. so you don't need to initialize it everytime, easiest way to get a set of data thru for loops or any other loops.