int[] arr = new int[10];
            Random rnd = new Random();
            for (int i = 0; i < arr.Length; ++i)
            {
                arr[i] = rnd.Next(10);
            }
            int[] array = new int[11];
            for (int j = 0; j < array.Length; ++j)
            {
                array[j] = 0;
            }
            for (int x = 0; x < 10; ++x)
            {
                if (arr[x] == x)
                {
                    array[x] += 1;
                }
            }