using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        //Objective:

        ////Create a class which will parse through the input

​

        //Requirements:

        //Create three different outputs

        ////one for a collection of words with the duplicates removed

        ////one for a collection of duplicate words

        ////one for a collection of each duplicate word and the number of times that word appeared

​

        //Additional Notes:

        ////Do not modify the code contained in the Main function

​

        Console.WriteLine("Welcome to the FHLB Coding Challenge");

        var fileParser = new FhlbFileParser();

        var dirExists = Directory.Exists(@".\Resources");

        var filePaths = dirExists == false

            ? Array.Empty<string>()

            : Directory.GetFiles(@".\Resources", "*.csv");

        foreach (var filepath in filePaths)

        {

            var file = File.ReadAllLines(filepath);

​

            var distinctWordsDelimitedString = fileParser.RemoveDuplicates(file, delimiter: ",");

            Console.WriteLine("RemoveDuplicates returned a count of " + distinctWordsDelimitedString.Split(',').Length);

​

            var duplicateWordsList = fileParser.ReturnOnlyDuplicates(file);

            Console.WriteLine("ReturnOnlyDuplicates returned a count of " + duplicateWordsList.Count);

​

            var duplicatesDTOArray = fileParser.ReturnDuplicatesDTO(file);

            Console.WriteLine("ReturnDuplicatesDTO returned a count of " + duplicatesDTOArray.Length);

​

            var mostOftenRepeatedWord = duplicatesDTOArray.FirstOrDefault(word => word.MostRepeated);

            Console.WriteLine("The most often repeated word was: " + mostOftenRepeatedWord?.Word + ", and was repeated " + mostOftenRepeatedWord?.Count + " times.");

        }

​

        Console.WriteLine("This concludes the FHLB Coding Challenge!");

        Console.WriteLine("Thank you for participating!");

    }

}

​

​

public class FhlbFileParser

{

    public string RemoveDuplicates(string[] file, string delimiter)

    {

        throw new NotImplementedException();

    }

​

    public List<string> ReturnOnlyDuplicates(string[] file)

    {

        throw new NotImplementedException();

    }

​

    public DuplicatesDTO[] ReturnDuplicatesDTO(string[] file)

    {

        throw new NotImplementedException();

    }

}

​