Just For Fun

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace TestFuns
{
    class Program
    {

        Functions#region Functions
        /**//// <summary>
        /// 数列
        /// </summary>
        /// <param name="n"></param>
        /// <returns></returns>
        private static int numlist(int n){
            if (n < 2)
                return 1;
            else
                return numlist(n - 1) + numlist(n-2);
        }

        /**//// <summary>
        /// 显示1-50随机数，各不相同
        /// </summary>
        private static void InsertRandomArr() { 
            int tmpNum=0;
            ArrayList newarr = new ArrayList();
            Random rd = new Random();
            while (newarr.Count < 50) {
                tmpNum = rd.Next(0, 51);

                if (!newarr.Contains(tmpNum))
                    newarr.Add(tmpNum);
            }

            for (int i = 49; i > 0; i--) {
                Console.Write(newarr[i].ToString()+" ");
            }
        }


        #endregion

        DelegateDemo#region DelegateDemo
        public class ShowMsgInfo
        {
            public delegate string msgOut(string str);
            public msgOut ShowMsg;
        }

        public static string ShowHTML(string str)
        {
            return string.Format("<B>{0}</B>", str);
        }

        public static string ShowTXT(string str)
        {
            return str;
        }
        #endregion

        static void Main(string[] args)
        {
            for (int i = 0; i < 10; i++)
                Console.WriteLine(numlist(i));

            InsertRandomArr();
            ShowMsgInfo sm = new ShowMsgInfo();
            sm.ShowMsg = new ShowMsgInfo.msgOut(ShowHTML);
            Console.WriteLine(sm.ShowMsg("Test"));
            sm.ShowMsg = new ShowMsgInfo.msgOut(ShowTXT);
            Console.WriteLine(sm.ShowMsg("Test2"));
            Console.Read();


        }
    }
}