Reverse of array elements (without using second array)

CODE:

import java.util.*;

class Reverse1

{

     public static void main(String args[])

     {

           int i,n,temp;

           Scanner sc = new Scanner(System.in);

           System.out.println("Enter number of elements:");

           n=sc.nextInt();

           int a[]=new int[n];

           for(i=0;i<=n-1;i++)

           {

                System.out.print("enter a no:");

                a[i]=sc.nextInt();

           }

           for(i=0;i<=(n-1)/2;i++)

           {

                temp=b[n-i-1];

                b[n-i-1]=a[i];

                a[i]=temp;

           }

           for(i=0;i<=n-1;i++)

           {

                System.out.println(a[i]);

           }

     }

}

     

OUTPUT: