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 class Program

    {

        static void Main(string[] args)

        {

            int[] Arr = new int[100];

            Random random = new Random();

            for (int i = 0; i < Arr.Length; i++)

            {

               Arr[i] = GetRandomNum(Arr, random);

            }

            for (int i = 0; i < 1000; i++)

            {

                //Console.WriteLine(random.Next(101));//这种会产生0-100之间的数,返回一个小于指定数的非负随机数

                //Console.WriteLine(random.Next(1,101));//这种会产生1-100之间的数 

            }

            sortArr(Arr, false);

            foreach (var item in Arr)

            {

                Console.WriteLine(item);

            }

        }

        private static int GetRandomNum(int[] Arr, Random random)

        {

            int tempValue = random.Next(1, 101);

            if (Arr.Contains(tempValue))

            {

                tempValue = GetRandomNum(Arr, random);

            }

            return tempValue;

        }

        private static int GetRandomNum2(int[] Arr, Random random)

        {

            int tempValue = random.Next(1, 100);

            while (!Arr.Contains(tempValue))

            {

                tempValue = random.Next(1, 100);

            }

            return tempValue;

        }

 

        static void sortArr(int[] Arr, bool orderby)

        {

            for (int i = 0; i < Arr.Length; i++)

            {

                for (int j = i + 1; j < Arr.Length; j++)

                {

                    if (orderby)

                    {

                        if (Arr[i] > Arr[j])

                        {

                            Arr[i] = Arr[j] + (Arr[j] = Arr[i]) * 0;

                        }

                    }

                    else

                    {

                        if (Arr[i] < Arr[j])

                        {

                            Arr[i] = Arr[j] + (Arr[j] = Arr[i]) * 0;

                        }

                    }

                }

            }

        }

    }