public class rev_string {

public static void main(String[] args) {

String n = "rohan";

printrevStr(n, n.length()-1);

}

public static void printrevStr(String a, int idx){

if(idx == 0){

System.out.println(a.charAt(idx));

return;

}

System.out.println(a.charAt(idx));

printrevStr(a, idx-1);

}

}