指定概率根据随机数执行操作 和苹果机游戏差不多的

public class demo
    {
        private string _name;

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        private int _rate;

        public int Rate
        {
            get { return _rate; }
            set { _rate = value; }
        }


        public demo(string name, int rate) { _name = name; _rate = rate; }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Random rd = new Random();
            demo[] arraylist = new demo[3] { new demo("苹果", 20), new demo("橘子", 80), new demo("香蕉", 10) };
            for (var i = 0; i < arraylist.Length; i++)
            {
                if (rd.Next(0, 101) <= arraylist[i].Rate)
                {
                    //执行
                }
                else { i++; }
            }
        }
    }