using System;

public class Program

{

    public static void Main()

    {

         var hs = GetHSTest2("testing3_12#5-4|7[");

         Console.WriteLine("FINAL hash: " + System.Math.Abs(hs)); //allowing only +ve values

    }

    static int GetHSTest2(string str)

     {  

        var hash = 0;

        foreach (char a in str)

        {

            if (a > 127)

            {

                throw new Exception(string.Format(@"{0} (code \u{1:X04}) is not ASCII!", a, (int)a));

            }

                //Console.WriteLine("{0}: {1}", a, (int)a);

                hash = ((hash << 5) - hash) + Convert.ToInt32(a);

                //Console.WriteLine("hash value: " + hash);

                hash = hash & hash; // Convert to 32bit integer

                //Console.WriteLine("hash main value: " + hash);

        }

          //Console.WriteLine("Returning hash: " + hash);

      return hash;

     }

}