decoding

import java.io.*;
class Hki
{
public void main()throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader (System.in));
System.out.println("enter the code");
String s=br.readLine();
int l=s.length();
int n=0;

String g="",y="";
for(int i=l-1;i>=0;i--)
{
g=g+s.charAt(i);
}
for(int j=0;j<l;j++)
{
(int)charch=s.charAt(g);
ch=ch-48;
n=n*10+ch;
if((ch>=65&&ch<=90)||ch==32||(ch>=97&&ch<=122))

{
y=y+(char)ch;
}
}
System.out.println(y);
}
}