JAVA PART - #6 ARRAYS

 Youtube channel :- madhavgediya 

Java playlist :- java playlist link

This video like :- video

 -: ARRAY :-

- An array is a collection of elements of the same size and same datatype.

- Types :-

    One-Dimensional Arrays

    Multidimensional Arrays  

-: One-Dimensional Arrays :-

Declaration :-

[ 1 ]    type var-name[ ];

    array-var=newtype[size]; 

[ 2 ]    datatype var[] = new var[size];

[ 3 ]     datatype var[] = {11,22,33,44,55,66};

CODING :- 

class arrayone

{

    public static void main(String args[])

    {

        int arr[] = new int[5];

        arr[0] = 123;

        arr[1] = 456;

        arr[2] = 789;

        arr[3] = 1011;

        arr[4] = 1213;

        System.out.println(arr[0]);

        System.out.println(arr[1]);

        System.out.println(arr[2]);

        System.out.println(arr[3]);

        System.out.println(arr[4]);

   

    }

}

output:-

123 456 789 1011 1213

-: Two-Dimensional Arrays :-

Declaration :-

datatype var [ ][ ]  = new var [ row-size ] [ column-size ]; 

row = 2 & col = 2

2 * 2 =  4

[0][0]

[0][1]

[1][0]

[1][1]

CODING :-

    

class arraytwo

{

    public static void main(String args[])

    {

        int arr[][] = new int[2][2];

        arr[0][0] = 123;

        arr[0][1] = 456;

        arr[1][0] = 789;

        arr[1][1] = 1011;

        System.out.println(arr[0][0]);

        System.out.println(arr[0][1]);

        System.out.println(arr[1][0]);

        System.out.println(arr[1][1]);

   

    }

}

output :-

    

123

456

789

1011

(only education purpose)