Arrays

Array is the set of similar data type. In array first elemnt is stored at 0^th location while last elemnt is stored at (n-1)th location. Elements within array are accessed by its index or location. There are two types of array:-

                   1) One-Dimensional Array:-

This type of array can be defined as two ways:

1) Type var_name[] = new type[size];

     This array will contains the size number of element. Size can be any whole number.

e.g.

      int x[] = new int[5];

In above type, array will contain 5 integer values or elements.

       char c[] = new char[10];

In this type, array will have 10 character elements.

2) Type var_name[] = {list of elements};

e.g.

      int x[] = {1,5,6,8,7};

In above type, array has above listed 5 integer values or elements.

      char s[] = {‘a’, ’d’, ’q’, ’r’};

In above type, array has above listed 4 charater values or elements.

           2) Multi-Dimensional Array:-

This type of array can also be defined as two types:-

         1) Type var_name[][] = new type[size][size];

         e.g.

               int x[][] = new int[5][4];

In above type, it will allocate 5 by 4 array of integer in two dimensions.

               char c[][] = new char[10][7];

In above type, it will allocate 10 by 7 array of character in two dimensions.

         2) Type var_name[][] = {{list of elements},{list of elements},….,{list of elemnts}};

         e.g.

               int x[][] = {{1,5,6,8,7},{15,7,98,35,354,58}};

In above type, it will allocate 5 by 6 array of above listed integers in two dimensions.

               char s[][] = {{‘a’, ’d’, ’q’, ’r’},{‘c’,’f’,’j’},{‘u’}};

In above type, it will allocate 4 by 3 by 1 array of above listed characters in three dimensions.