Kod test

Program.cs

using System.Runtime;

namespace CodeTest
{
    internal class Program
    {
        /*
        * Complete the 'countSubstrings' function below.
        * The function is expected to return an INTEGER.
        * The function accepts STRING input_str as parameter.
        */

        public static int countSubstrings(string input_str)
        {
            int iSum, iSubstringLength, iReturnValue = 0;

            // Get Substring
            List<string> listStrings = fnSubString(input_str, input_str.Length);

            //Parallel.ForEach(listStrings, str =>
            //{
            //    iSum = fnCharMappedToNumber(str);
            //    iSubstringLength = str.Length;
            //    if (iSum % iSubstringLength == 0)
            //        iReturnValue++;
            //
            //});

            // Get sum
            foreach (string str in listStrings) { 
                 
                // Sum
                iSum = fnCharMappedToNumber(str);
            
                // Length
                iSubstringLength = str.Length;
            
                
                // Is divisible
                if (iSum % iSubstringLength == 0)
                {
                    iReturnValue++;
                }
            
                //Console.WriteLine($"str: {str} Sum: {iSum} Legnth: {iSubstringLength} Mod:{iSum % iSubstringLength}");
            
            }

            return iReturnValue;
        }

        static List<string> fnSubString(string str, int n)
        {
            List<string> listStrings = new List<string>();
            string strTemp = "";

            // Pick starting point
            for (int len = 1; len <= n;len++)
            {
                // Pick ending point
                for (int i = 0;i <= n - len; i++)
                {
                    int j = i + len - 1;

                    for (int k = i; k <= j; k++)
                    {
                        //Console.Write(str[k]);
                        strTemp += str[k];  
                    }
                    listStrings.Add(strTemp);
                    strTemp = "";
                    //Console.WriteLine();
                }
            }

            return listStrings;
        }

        public static int fnCharMappedToNumber(string strInput)
        {
            int iReturnValue = 0;


            foreach (char cChar in strInput)
            {
                //if (!char.IsLetter(cChar))
                    //break;

                char cChar2 = char.ToLower(cChar);
                switch (cChar2)
                {
                    case 'a':
                    case 'b':
                        iReturnValue += 1;
                        break;
                    case 'c':
                    case 'd':
                    case 'e':
                        iReturnValue += 2;
                        break;
                    case 'f':
                    case 'g':
                    case 'h':
                        iReturnValue += 3;
                        break;
                    case 'i':
                    case 'j':
                    case 'k':
                        iReturnValue += 4;
                        break;
                    case 'l':
                    case 'm':
                    case 'n':
                        iReturnValue += 5;
                        break;
                    case 'o':
                    case 'p':
                    case 'q':
                        iReturnValue += 6;
                        break;
                    case 'r':
                    case 's':
                    case 't':
                        iReturnValue += 7;
                        break;
                    case 'u':
                    case 'v':
                    case 'w':
                        iReturnValue += 8;
                        break;
                    case 'x':
                    case 'y':
                    case 'z':
                        iReturnValue +=  9;
                        break;


                    default: 
                       
                        break;
                }
            }

            return iReturnValue;

        }


        static void Main(string[] args)
        {
            Console.WriteLine($"{countSubstrings("asdf")}");
            //Console.WriteLine($"{countSubstrings("a")}");
            //Console.WriteLine($"{countSubstrings("aux")}");

            Console.ReadLine();
        }


    }
}