using System;

using System.Collections.Generic;

using System.Text;

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

​

        */

    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 everyResult in resultList)

        {

            foreach (var result in everyResult)

            {

                Console.WriteLine(result.Key + " " + result.Value);

            }

​

            Console.WriteLine();

        }

    }

​

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

    {

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

        var splittedString = inputStr.Split(separator);

        int count = splittedString.Length - 1;

        result.Add("Count", count.ToString());

        if (splittedString[0] != "")

        {

            result.Add("Prefix:", splittedString[0]);

        }

        else

        {

            result.Add("Prefix:", "None");

        }

​

        List<string> order = new List<string>();

        for (int i = 1; i < splittedString.Length; i++)

        {

            order.Add(splittedString[i]);

        }

​

        order.Sort();

        string orderTheString = "";

        foreach (var item in order)

        {

            orderTheString += item + " ";

        }

​

        if (orderTheString == "")

        {

            orderTheString = inputStr;

        }

​

        result.Add("sortedItems", orderTheString);

        string evenString = "";

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

        {

            if (i % 2 == 0)

            {

                evenString += inputStr[i];

            }

        }

​

        result.Add("EvenChars:", evenString);

        return result;

    }

}