C# -- 隨機數(Random)的使用

使用隨機數產生一組大樂透號碼

1. C#代碼

 1             Console.WriteLine("===============大樂透===紅色球===============");
            List<int> listRed = new List<int>();
            Random rangdomRed = new Random();
            for (int i = 0; listRed.Count < 5; i++)
            {
                int redNum = rangdomRed.Next(1, 35);
                if (!listRed.Contains(redNum))
                {
                    listRed.Add(redNum);
                    Console.Write("{0} ", redNum);
                }

            }
            Console.WriteLine();
            Console.WriteLine("===============大樂透===藍色球================");
            List<int> listBlue = new List<int>();
            Random rangdomBlue = new Random();
            for (int i = 0; listBlue.Count < 2; i++)
            {
                int blueNum = rangdomBlue.Next(1, 12);
                if (!listBlue.Contains(blueNum))
                {
                    listBlue.Add(blueNum);
                    Console.Write("{0} ", blueNum);
                }
            }

            Console.WriteLine();
            Console.WriteLine("===============排序=============");
            listRed.Sort();
            for (int i = 0; i < listRed.Count; i++)
            {
                Console.Write("{0} ", listRed[i]);
            }
            listBlue.Sort();
            for (int i = 0; i < listBlue.Count; i++)
            {
                Console.Write("{0} ", listBlue[i]);
            }
            Console.WriteLine();


            Console.ReadKey();

2. 運行結果