using System;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        //without altering any of the code in Main() write code in this fiddle that satisfies the examples below: 

        Console.WriteLine("(1)\t====== Remove Extra Chars ======" + "\n\n\t\tReturn a string where the number of consecutive characters of the same value is limited to the parameter supplied\n");

        //should return "aabbccdde" - only 2 of the same character in a row

        Console.WriteLine("aaabbcccccdddde".RemoveConsecutiveChars(2));

        Console.WriteLine("\n\n(2)\t====== Fizz Buzz ======" + "\n\n\t\tShould return each number between zero and its parameter (inclusive) but replaces multiples of 3 with 'Fiz' and multiples of 5 with 'Buz'" + "\n\n\t\tWhere the number of 'z' characters each word is the same as the other factor of the input number" + "\n\n\t\tFor multiples of both 3 and 5 replace the number with both of the corresponding 'Fizz'-'Buzz' words. eg 15=\"Fizzzzz-Buzzz\"\n");

        foreach (var s in FizzBuzz(100))

        {

            Console.Write(s);

        }

    }

    public static void TestRemoveConsecutiveChars()

    {

        var expectedResult = "aabbccdde";

        var result = "aaabbcccccdddde".RemoveConsecutiveChars(2);

        Console.Write(result);

        Console.Write(expectedResult == result ? " equals " : " does not equal ");

        Console.Write(expectedResult);

    }

    public static void TestFizzBuzz()

    {

        var expectedResult = "Fizzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz-Buzzzzzzzzzzzzzzzzzzzz";

        var result = FizzBuzz(100);

        Console.Write(result);

        Console.Write(expectedResult == result ? " equals " : " does not equal ");

        Console.Write(expectedResult);

    }

​

    public static string FizzBuzz(int input)

    {

        var numberOfThrees = input / 3;

        var numberOfFives = input / 5;

        string result = string.Empty;

        if (numberOfThrees > 0)

        {

            result = "Fi";

            var stringBuilder = new StringBuilder();

            for (var i = 0; i < numberOfThrees; i++)

            {

                stringBuilder.Append("z");

            }

​

            result += stringBuilder.ToString();

        }

​

        if (numberOfThrees > 0 && numberOfFives > 0)

        {

            result += '-';

        }

​

        if (numberOfFives > 0)

        {

            result += "Bu";

            var stringBuilder = new StringBuilder();

            for (var i = 0; i < numberOfFives; i++)

            {

                stringBuilder.Append("z");

            }

​

            result += stringBuilder.ToString();

        }

​

        return result;

    }

}

​

public static class StringExtensions

{

    public static string RemoveConsecutiveChars(this String input, int consecutiveMax)

    {

        var result = string.Empty;

        var stringBuilder = new StringBuilder();

        var currentConsecutiveChar = ' ';

        var currentConsecutiveLength = 0;

        for (var i = 0; i < input.Length; i++)

        {

            var currentChar = input[i];

            if (currentConsecutiveChar == currentChar)

            {

                currentConsecutiveLength++;

            }

            else

            {

                currentConsecutiveLength = 0;

                currentConsecutiveChar = currentChar;

            }

​

            if (currentConsecutiveLength < consecutiveMax)

            {

                 stringBuilder.Append(input[i]);

            }

        }

​

        result = stringBuilder.ToString();

        return result;

    }

}