Comments by George Swan (Top 200 by date)

            var dt3 = DateTime.ParseExact(
                          "6/16/2022 11:40 PM",
                          "M/dd/yyyy hh:mm tt",
                          CultureInfo.InvariantCulture);
            Console.WriteLine(dt3.ToString());

           Random random = new Random();
            //range 600 to 700 inclusive
            int[] choices = Enumerable.Range(600, 101).ToArray();
            // Fisher–Yates shuffle method
            int i = choices.Length - 1;
            while (i > 0)
            {
                //k is chosen from a decreasing number of elements
                int k = random.Next(i + 1);//range is 0-i inclusive
                var temp = choices[i];
                choices[i] = choices[k];
                choices[k] = temp;
                i--;
            }
            int N = 6;//provided by user
            int[] X = new int[N];
            Array.Copy(choices, X, X.Length);

static void ClearEntries(List<string[]> blogPost)
        {
            blogPost.Clear();                    
        }

   //use named values
 List<(string value, int index)> uniquelist = myList.Distinct()
   //Simply declare the tuple rather than instantiate it
     .Select(x => ( x,  myList.IndexOf(x)))
     .ToList();
 List<int> indOfDup = Enumerable.Range(0, myList.Count)
   //reference the index by name rather than 'Item2'
     .Where(x => !uniquelist.Any(y => y.index == x))
     .ToList();

                <TextBlock x:name="txtBlock_intestazione" Style="{StaticResource 
                 TbIntestazione}" Text="{Binding Path=Denominazione, UpdateSourceTrigger=PropertyChanged}"/>

 string tester = "1 cup of hot coffee costs 8.00, whereas cold coffee costs 45.00.";
            string[] words = tester.Split(' ');
            List<string> reversedWords = new List<string>();
            foreach(var word in words)
            {
                 string trimmed = word.Trim(',', '.', ';');
                string s = double.TryParse(trimmed, out _) ? word : ReverseString(word);              
                    reversedWords.Add(s);              
            }
            var reversed = string.Join(" ", reversedWords);

 public static int Play()
        {
            int initialChoice = random.Next(3);//make a choice
            int winningDoor = random.Next(3);//the car is here
            return initialChoice == winningDoor ? 0 : 1;
         }