Ex04_WinningTicket

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography.X509Certificates;
using System.Text.RegularExpressions;

namespace Ex04_WinningTicket
{
    class WinningTicket
    {
        static void Main()
        {
            //solution 1

            #region Solution1

            //    var tickets = Console.ReadLine()
            //        .Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
            //        .Select(t => t.Trim())
            //        .ToArray();

            //    foreach (var ticket in tickets)
            //    {
            //        if (ticket.Length != 20)
            //        {
            //            Console.WriteLine("invalid ticket");
            //            continue;
            //        }
            //        var left = new string(ticket.Take(10).ToArray());
            //        var right = new string(ticket.Skip(10).ToArray());

            //        var winningSimbols = new string[] { "@", "#", "\\^", "\\$" };
            //        var winingTicket = false;
            //        foreach (var winningSimbol in winningSimbols)
            //        {
            //            var regex = new Regex($"{winningSimbol}{{6,}}");
            //            var lefMatch = regex.Match(left);
            //            if (lefMatch.Success)
            //            {
            //                var rightMatch = regex.Match(right);
            //                if (rightMatch.Success)
            //                {
            //                    winingTicket = true;
            //                    var leftSimbolsLenght = lefMatch.Value.Length;
            //                    var rightSimbolsLenght = rightMatch.Value.Length;
            //                    var jackpot = leftSimbolsLenght == 10 && rightSimbolsLenght == 10
            //                        ? " Jackpot!" : String.Empty;
            //                    Console.WriteLine($"ticket \"{ticket}\" - " +
            //                                      $"{Math.Min(leftSimbolsLenght,rightSimbolsLenght)}" +
            //                                      $"{winningSimbol.Trim('\\')}{jackpot}");
            //                    break;
            //                }
            //            }
            //        }
            //        if (!winingTicket)
            //        {
            //            Console.WriteLine($"ticket \"{ticket}\" - no match");
            //        }
            //    }

            #endregion

            //Solution2 with IF
            var tickets = Console.ReadLine()
                .Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
                .Select(t => t.Trim())
                .ToArray();

            foreach (var ticket in tickets)
            {
                if (ticket.Length != 20)
                {
                    Console.WriteLine("invalid ticket");
                    continue;
                }
                var left = ticket.Take(10).ToArray();
                var right = ticket.Skip(10).ToArray();

                var winningTicket = false;

                var leftResult = FindRepeatinSimbols(left);
                if ((leftResult.Symbol == '@'
                    || leftResult.Symbol == '#'
                    || leftResult.Symbol == '$'
                    || leftResult.Symbol == '^')
                    && leftResult.Count >= 6)
                {
                    var rightResult = FindRepeatinSimbols(right);
                    if (leftResult.Symbol == rightResult.Symbol && rightResult.Count >= 6)
                    {
                        var jackpot = leftResult.Count == 10 && rightResult.Count == 10 ? " Jackpot!" : String.Empty;
                        Console.WriteLine($"ticket \"{ticket}\" - " +
                                          $"{Math.Min(leftResult.Count,rightResult.Count)}{leftResult.Symbol}{jackpot}");
                        winningTicket = true;
                    }
                }
                    if (!winningTicket)
                    {
                        Console.WriteLine($"ticket \"{ticket}\" - no match");
                    }
            }
        }

        public class Result
        {
            public int Count { get; set; }
            public char Symbol { get; set; }
        }
        public static Result FindRepeatinSimbols(char[] symbols)
        {
            var previusSymbol = symbols.First();
            int count = 1;
            var maxCount = 0;
            var maxSymbol = default(char);
            for (int i = 1; i < symbols.Length; i++)
            {
                var currentSymbol = symbols[i];
                if (previusSymbol == currentSymbol)
                {
                    count++;
                }
                else
                {
                    if (count > maxCount)
                    {
                        maxCount = count;
                        maxSymbol = previusSymbol;
                    }
                    count = 1;
                }
                if (count > maxCount)
                {
                    maxCount = count;
                    maxSymbol = previusSymbol;
                }
                previusSymbol = currentSymbol;
            }
            return new Result()
            {
                Count = maxCount,
                Symbol = maxSymbol
            };
        }
    }
}