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namespace ConsoleApp3
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Random random = new Random();

            string[] examples = new[] 
            {
                "example_1",
                "example_2",
                "example_3",
                "example_4",
                "example_5",
                "example_6",
                "example_7",
                "example_8",
                "example_9",
                "example_10",
            };

            List<int> nums = new List<int>();

            Console.WriteLine("Введите количество нужных случайных значении: ");
            int input = Convert.ToInt32(Console.ReadLine());

            int randomIndex = -1;

            int i = 0;
            while(i < input)
            {
                randomIndex = random.Next(examples.Length);

                if (nums.Contains(randomIndex))
                {
                    continue;
                }
                else
                {
                    Console.WriteLine(examples[randomIndex]);
                    nums.Add(randomIndex);
                    i++;
                }
            }














            //int randomIndexBefore = 0;
            //int randomIndexAfter = -1;


            //int i = 0;
            //while (i < 3)
            //{
            //    randomIndexBefore = random.Next(examples.Length); // 5, 3
            //    if (randomIndexBefore != randomIndexAfter) 
            //    {
            //        Console.WriteLine(examples[randomIndexBefore]); 
            //        randomIndexAfter = randomIndexBefore; // 5
            //        i++;
            //    }
            //    else
            //    {
            //        continue;
            //    } 
            //}


        }
    }
}
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