class Program
    {
        static void Main(string[] args)
        {
            //練習題{ 33, 36, 66, 23 }{36,66,33,23}
            int[] arrA = { 33, 36, 66, 23 };
            int[] arrB = new int[arrA.Length];

            ShowClass.Show1(arrA, "前： ");

            arrA.CopyTo(arrB, 0);
            Array.Copy(arrA, 1, arrB, 0, 2);
            Array.Copy(arrA, 0, arrB, 2, 1);

            ShowClass.Show1(arrB, "后： ");




            //練2：{ 33, 36, 66, 23 } {33，66，23，36}

            int[] arrC = new int[arrA.Length];
            ShowClass.Show1(arrA, "前： ");
            arrA.CopyTo(arrC, 0);
            Array.Copy(arrA, 1, arrC, arrA.Length - 1, 1);
            Array.Copy(arrA, 2, arrC, 1, 1);
            Array.Copy(arrA, arrA.Length - 1, arrC, 2, 1);
            ShowClass.Show1(arrC, "后： ");


            //練 {36,66,33,23} {33，66，23，36}

            int[] arrD = new int[arrB.Length];
            ShowClass.Show1(arrB, "前： ");
            arrB.CopyTo(arrD, 0);
            Array.Copy(arrB, 0, arrD, 3, 1);//5個參數 參數1：被復制數組，參數2：被復制參數下標；參數3:復制數組；參數4：復制數組下標；參數5：被復制數組的元素長度個數；
            Array.Copy(arrB, 2, arrD, 0, 1);
            Array.Copy(arrB, 3, arrD, 2, 1);
            ShowClass.Show1(arrD, "后： ");



            // 隨機數
            Random myRandom = new Random();
            Console.WriteLine(myRandom.Next(1, 100));//表示1-100的隨機數，包含1，不包含100；

            // 練 隨機10個數 范圍1-100；奇數放奇數位；偶數放偶數位；
            int[] arr1 = new int[10];
            int number = 0;
            int ou = 0;
            int ji = 1;
            Random myRan = new Random();

            //for循環
            for (int i = 0; i < arr1.Length; i++)
            {
            chongfu1:
                number = myRan.Next(20, 80);
                if (number % 2 == 0 && ou < 9)
                {
                    arr1[ou] = number;
                    ou += 2;
                }
                else if (number % 2 != 0 && ji < 10)
                {
                    arr1[ji] = number;
                    ji += 2;
                }
                if (ji - ou > 1 || ji < ou)
                {//隨機出來的奇數不能連續兩個；奇數位-偶數位等于1可以，大于1就不不行，奇數位小于偶數位時重復；

                    goto chongfu1;
                }
            }


            int j = 0;//隨機1-10賦值到數組里面去；
            while (true)
            {

                number = myRan.Next(1, 100);
                j++;
                if (j == 10)
                {
                    break;
                }
                arr1[j] = number;
            }


            ShowClass.Show1(arr1, "隨機數:\0\0\0");

            //goto
            int[] arrX = new int[10];
            Random MyRan = new Random();
            int indexO = 0;
            int indexJ = 1;
            int count = 0;
            int num = 0;
        chongfu:
            num = MyRan.Next(20, 80);
            if (num % 2 == 0 && indexO < 10)
            {
                arrX[indexO] = num;
                indexO += 2;
                count++;
            }
            else if (num % 2 == 1 && indexJ < 10)
            {
                arrX[indexJ] = num;
                indexJ += 2;
                count++;
            }
            if (count < 10)
            {
                goto chongfu;
            }

            ShowClass.Show1(arrX, "20-80隨機數:\0\0\0");

            while (true)
            {

                num = MyRan.Next(1, 10);
                if (num % 2 == 0 && indexO < 10)
                {
                    arrX[indexO] = num;
                    indexO += 2;
                    count++;

                }
                else if (num % 2 == 1 && indexJ < 10)
                {
                    arrX[indexJ] = num;
                    indexJ += 2;
                    count++;

                }
                if (count == 10)
                {
                    break;
                }

            }
            ShowClass.Show1(arrX, "while隨機數：");
            Console.ReadKey();
        }
    }