public static void Main()
Console.WriteLine("enter array size");
no=int.Parse(Console.ReadLine());
Console.WriteLine("elements-{0} ",i+1);
a[i]=int.Parse(Console.ReadLine());
Console.WriteLine("a value {0} is and a index {1} is , rev value is {2} and rev index is {3}",a[i],i,rev[j],j);
Console.WriteLine(rev[k]);