Palindromes

using System;
using System.Collections.Generic;
using System.Linq;

namespace Pa_indromes
{
    class Program
    {
        static void Main()
        {
            string[] inputParams = Console.ReadLine().Split(new char[] { ' ', '\t', ',', '?', '!', '.' }, StringSplitOptions.RemoveEmptyEntries);

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

            for (int i = 0; i < inputParams.Length; i++)
            {
                string word = inputParams[i];

                if (word.Length == 1)
                {
                    palindromes.Add(word);
                } else if(word.Length % 2 == 1)
                {
                    bool sidesMatches = true;

                    int middleCharacter = word.Length / 2;

                    for (int j = 0; j < middleCharacter; j++)
                    {
                        if (word[middleCharacter - (1 + j)] != word[middleCharacter + (1 + j)])
                        {
                            sidesMatches = false;
                            break;
                        }
                    }

                    if (sidesMatches)
                    {
                        palindromes.Add(word);
                    }
                } else
                {
                    bool sidesMatches = true;

                    int middleCharacter = word.Length / 2;

                    for (int j = 0; j < middleCharacter; j++)
                    {
                        if (word[middleCharacter - (1 + j)] != word[middleCharacter + j])
                        {
                            sidesMatches = false;
                            break;
                        }
                    }

                    if (sidesMatches)
                    {
                        palindromes.Add(word);
                    }
                }
            }

            palindromes.Sort((a, b) => a.CompareTo(b));

            Console.WriteLine("[" + string.Join(", ", palindromes) + "]");
        }
    }
}