03Problem-NetherRealms

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace _03Problem_NetherRealms
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> demons = Console.ReadLine().Split(',').Select(x => x.Trim()).OrderBy(x => x).ToList();

            string healthPattern = @"[^\d\+\-\\\/\*\.]";
            string damagePattern = @"((-?\d+(\.\d+)?))";
            string mathSymbolPatten = @"[\/*]";

            for (int i = 0; i < demons.Count; i++)
            {
                MatchCollection hpRegex = Regex.Matches(demons[i], healthPattern);
                MatchCollection dmgRegex = Regex.Matches(demons[i], damagePattern);
                MatchCollection mathSymbolRegex = Regex.Matches(demons[i], mathSymbolPatten);

                long totalHealth = 0;
                decimal totalDamage = 0M;

                foreach (Match letter in hpRegex)
                {
                    totalHealth += letter.Value[0];
                }

                foreach (Match number in dmgRegex)
                {
                    totalDamage += decimal.Parse(number.Value);
                }

                foreach (var mathSymbol in mathSymbolRegex)
                {
                    if (mathSymbol.ToString().Equals("/"))
                    {
                        totalDamage /= 2;
                    }
                    else if (mathSymbol.ToString().Equals("*"))
                    {
                        totalDamage *= 2;
                    }
                }

                Console.WriteLine($"{demons[i]} - {totalHealth} health, {totalDamage:0.00} damage");
            }
        }
    }
}