using System;
using System.Linq;

namespace _08112ACW2
{
    class Program
    {
        static bool palinCheck(string userInput)
        {
            //Inits
            string x;
            bool f;
            int a, z, g;
            char[] punctArray = { ' ', ',', ';', '!', '?', '.' };

            x = userInput;
            g = x.Length;
            z = g - 1;
            a = 0;

            if (g == 1)
            { /* if the input is only one character it is a palindrome, we don't need to check */
                f = true; /* this is unneeded, can simply be set to true on initalization */
            }
            else
            {
                f = true;
                while (f && a < z)
                {
                    while (punctArray.Contains<char>(x[a]))
                    { /* skip punctuation on inputs */
                        a++;
                    }
                    while (punctArray.Contains<char>(x[z]))
                    {
                        z--;
                    }
                    if (x[a].ToString().ToUpper() == x[z].ToString().ToUpper())
                    { /* check inputs from both ends are equal */
                        a++;
                        z--;
                    }
                    else
                    {
                        f = false; /* if any are unequal it isn't a palindrome */
                    }
                }
            }
            //if (!f)
            //{
            //    return false;
            //}
            //else
            //{
            //    return true;
            //}
            return f;
        }

        public static void Main()
        {
            string[] testInputs = new string[5]
            {
                "hello world",
                "yo yo oy oy",
                " 23  3!!2",
                "./\\/ap:",
                "129hfknjas"
            };
            foreach (string test in testInputs)
            {
                Console.WriteLine(palinCheck(test));
            }
            Console.ReadLine();
        }
    }
}