Main.java

import java.util.Random; 
import java.util.Scanner; 
import java.io.*; 

public class Main 
{ 
    public static String reverse(String originalStr) 
    { 
        String resultStr = "";
        for (int i = originalStr.length() - 1 ; i >= 0 ; i--) { 
            resultStr = resultStr + originalStr.charAt(i); 
        } 

        System.out.println(Integer.toHexString(resultStr.hashCode()));
        return resultStr; 
    } 

    public static void main(String[] args) throws IOException { 
        String s = new String("hello world"); 
        String result = reverse(s);
        System.out.println(Integer.toHexString(result.hashCode()));
        System.out.println(result); 
    } 
}