Program to reverce number of array

   import java.io.*;
class Reverse
{
public static void main(String args[])throws IOException
{
int r,i=0,rev;
InputStreamReader a=new InputStreamReader(System.in);
BufferedReader b=new BufferedReader(a);
System.out.println("Please  enter  the size of array ");
int num=Integer.parseInt(b.readLine());
int arr[]=new int[num];
for(i=1;i<=num;i++)
arr[i]=Integer.parseInt(b.readLine());
System.out.println("this is entered by the user"); 
for(int value: arr)
System.out.println(value); 
for(i=0;i< num;i++)
{
r=arr[i];
while(r!=0)
{
rev=r%10;
System.out.print( rev);
r=r/10;
}
System.out.println( " Reverce number");
}
}
}

Output:

Please  enter  the size of array
3
this is entered by the user
123
45
790
Reverce number
321
54
097