using System;

using Newtonsoft.Json.Linq;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var Payload = new Dictionary<string, object>(){

            {"Doors", new List<int>(){1,2,3}}

        };

        Payload.Add("SD",Payload["Doors"].Shuffle());

         var jObj = JObject.FromObject(Payload);

        Console.WriteLine(jObj.SelectToken("$.Doors[2]"));

    }

}

​

​

 public static class Extensions

    {

​

        public static int[] MultipleIndex(this string StringValue, char chChar)

        {

            int i = 0;

            var indexs = from rgChar in StringValue

                         where rgChar == chChar && i != StringValue.IndexOf(rgChar, i + 1)

                         select new { Index = StringValue.IndexOf(rgChar, i + 1), Increament = (i = i + StringValue.IndexOf(rgChar)) };

            i = 0;

            return indexs.Select(p => p.Index).ToArray<int>();

        }

​

        public static T PickRandom<T>(this IEnumerable<T> source)

        {

            return source.PickRandom(1).SingleOrDefault();

        }

​

        public static IEnumerable<T> PickRandom<T>(this IEnumerable<T> source, int count)

        {

            return source.Shuffle().Take(count);

        }

​

        public static IEnumerable<T> Shuffle<T>(this IEnumerable<T> source)

        {

            return source.OrderBy(x => Guid.NewGuid());

        }

​

​

    }