TESDOME - Test for Jr Developer - Epic Fall!

I have just done a little test that it'd be presented to a junior developer. It wasn't difficult at all, but time ran out before I corrected my mistake! So easy to become slow in what you don't use daily!

THE TEST:

Find the index of the longest run in a give string. For example, in the string
 str ="abbcccddddcccbbaa" the value to return would be 6, which is the index of the first "d" (the char repeated 4 times in a run).

A SIMPLE SOLUTION:

char[] c = str.ToCharArray();
int count =1;
int longestRun=0;
int longestPosition=0;
int position=0;

for (int i=0; i< c.Length-2; i++)
{
    position =i;
    if (c[i] == c[i+1]) count++;
    else
      {
         if (longestRun < count)
         {
              longestRun = count;
              longestPosition = position - count +1;       
          }
          else count =1;
      }
}
Console.WriteLine(longestPosition);



Given the IDE of TestDome which doesn't allow you for much testing or displaying values to check how you are doing, neither the time give is enough to investigate what the IDE can do for you, this is the best line of though I could improvise. Needless said that I didn't have time to copy the code to visual studio, debug and paste the working code back on time! :O I might be too slow...

PR

I would love to see a good solution!!!!

TESTDOME - PALINDROME

TEST C#:

Write a function that checks if a given sentence is a palindrome. A palindrome is a word, phrase, verse, or sentence that reads the same backward or forward. Only the order of English alphabet letters (A-Z and a-z) should be considered, other characters should be ignored.

For example, IsPalindrome("Noel sees Leon.") should return true as spaces, period, and case should be ignored resulting with "noelseesleon" which is a palindrome since it reads same backward and forward.

SOLUTION (100%):

public class Palindrome

{

    public static bool IsPalindrome(string str)

    {        

        str = str.ToLower();

        var newStr = String.Join("", str.Where(char.IsLetterOrDigit));

        int l = newStr.Length;

        var reverse = String.Empty;       

        

        for (int i= l-1; i>=0; i--) reverse +=newStr[i];

        

        if (newStr == reverse) return true;

        else return false;            

            

    }

    public static void Main(string[] args)

    {      

        Console.WriteLine(IsPalindrome("Noel sees Leon."));

    }

}

PR