using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    /*

        There is a string "sdfgabcwetrrytruyrtuabcpotre!@#abcprtort" - see above.

        The task is to implement the following method:

​

        public Dictionary<string,string> processString(String inputStr, String separator);

​

        The result need to contain the following keys:

        Count : count all substrings (itemstrings)  infront of which there is a separator string (if xxx is the string and A is the separator here: xxxAxxxAxxxAxxx, you need to return 3);

        prefix : if any string exists before the first separator, please provide the text

        sortedItems : a string with all itemstrings concatenated in alphabetical order

        evenChars : a string with concatenated all even indexed chars (2,4,6,8,10th)

        note: if there is no separator found in input string then the whole inputString is counted as 1 itemString 

        Example output when executed with inputString = "abcdefSEPgabcwetSEPsdsSEPdsfgSEPfro",separator = "SEP"));

        Count: 4

        Prefix: abcdef

        sortedItems: dsfg fro gabcwet sds

        evenChars: aceSPaceSPdSPsgEfo

​

        */

​

    /// <summary>

    /// Original String inside to check is the functionallity working as well

    /// </summary>

    public static void Main()

    {

        string inputString = "sdfgabcwetrrytruyrtuabcpotre!@#abcprtort";

        var resultList = new List<Dictionary<string, string>>();

        resultList.Add(Program.processString(inputString, "abc"));

        resultList.Add(Program.processString(inputString, "s"));

        resultList.Add(Program.processString(inputString, "r"));

        resultList.Add(Program.processString(inputString, "zi"));

        /*

        implement all results display here in following format:

        Count: some number

        Prefix: some string

        sortedItems: some string

        evenChars: some string

        */

        foreach (var item in resultList)

        {

            Console.WriteLine("Count:" + item["Count"]);

            Console.WriteLine("Prefix:" + item["Prefix"]);

            Console.WriteLine("sortedItems:" + item["sortedItems"]);

            Console.WriteLine("evenChars:" + item["evenChars"]);

            Console.WriteLine("--**--**--**--");

        }

    }

​

    /// <summary>

    /// Example String inside to check is the functionallity working as well

    /// </summary>

    //public static void Main()

    //{

​

    //  string inputString = "abcdefSEPgabcwetSEPsdsSEPdsfgSEPfro";

    //  var resultList = new List<Dictionary<string, string>>();

    //  resultList.Add(Program.processString(inputString, "SEP"));

    //  /*

    //  implement all results display here in following format:

    //  Count: some number

    //  Prefix: some string

    //  sortedItems: some string

    //  evenChars: some string

    //  */

    //  foreach (var item in resultList)

    //  {

    //      Console.WriteLine("Count:" + item["Count"]);

    //      Console.WriteLine("Prefix:" + item["Prefix"]);

    //      Console.WriteLine("sortedItems:" + item["sortedItems"]);

    //      Console.WriteLine("evenChars:" + item["evenChars"]);

    //  }

    //}

​

    public static Dictionary<string, string> processString(String inputStr, String separator)

    {

        Dictionary<string, string> result = new Dictionary<string, string>();

        var countString = string.Empty;

        var prefix = string.Empty;

        var sortedItems = string.Empty;

        var evenChars = string.Empty;

​

        var iStrings = inputStr.Split(separator);

        prefix = iStrings[0];

​

        countString = iStrings.Where(x => !x

            .Equals(prefix))

            .Count()

            .ToString();

        var sortedList = iStrings.Where(x => !x

            .Equals(prefix))

            .ToList();

        sortedList.Sort();

        sortedItems = String.Join(" ", sortedList);

​

        for (int i = 0; i < inputStr.Length; i++)

        {

            if (i % 2 == 0)

                evenChars += inputStr[i];

        }

​

        result.Add("Count", countString);

        result.Add("Prefix", prefix);

        result.Add("sortedItems", sortedItems);

        result.Add("evenChars", evenChars);

​

        return result;

    }

}