Added Run time for response answer

AOC2021/Models/AOCDay.cs

@@ -2,6 +2,7 @@
 using Microsoft.Extensions.Logging;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 
 namespace AOC2021.Models
 {
@@ -23,8 +24,10 @@ namespace AOC2021.Models
         public AOCResponse ExecuteDay(AOCRequest request)
         {
             _request = request;
+            var timer = new Stopwatch();
             try
             {
+                timer.Start();
                 switch (request.Version)
                 {
                     case AOCVersion.A:
@@ -34,6 +37,8 @@ namespace AOC2021.Models
                         this._response = ExecutePartB();
                         break;
                 }
+                timer.Stop();
+                this._response.RunTime = timer.ElapsedMilliseconds.ToString();
                 this._response.Status = true;
             }
             catch (Exception e)

AOC2021/Models/AOCResponse.cs

@@ -19,5 +19,16 @@ namespace AOC2021.Models
         public IEnumerable<string> Debug { get; set; }
         [DataMember]
         public string StackTrace { get; set; }
+        private string timeInMs;
+        [DataMember]
+        public string RunTime { get { return FormatRunTime(); } set { timeInMs = value; } }
+
+        public string FormatRunTime()
+        {
+            var ts = TimeSpan.FromMilliseconds(Convert.ToDouble(timeInMs));
+            return $"Run time is {ts.Hours}h {ts.Minutes}min {ts.Seconds}sec {ts.Milliseconds}ms";
         }
     }
+
+
+}