策略模式与简单工厂模式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp6
{
    /// <summary>
    /// 策略模式(个人所得税例子)
    /// </summary>
    public class InterestOperation
    {
        private ITaxStragety m_strategy;
        public InterestOperation(ITaxStragety strategy)
        {
            this.m_strategy = strategy;
        }

        public double GetTax(double income)
        {
            return m_strategy.CalculateTax(income);
        }
    }

    // 所得税计算策略
    public interface ITaxStragety
    {
        double CalculateTax(double income);
    }

    // 个人所得税
    public class PersonalTaxStrategy : ITaxStragety
    {
        public double CalculateTax(double income)
        {
            return income * 0.12;
        }
    }

    // 企业所得税
    public class EnterpriseTaxStrategy : ITaxStragety
    {
        public double CalculateTax(double income)
        {
            return (income - 3500) > 0 ? (income - 3500) * 0.045 : 0.0;
        }

    }


}

  // 个人所得税方式
            InterestOperation operation = new InterestOperation(new PersonalTaxStrategy());
            Console.WriteLine("个人支付的税为：{0}", operation.GetTax(5000.00));

            // 企业所得税
            operation = new InterestOperation(new EnterpriseTaxStrategy());
            Console.WriteLine("企业支付的税为：{0}", operation.GetTax(50000.00));

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp6
{
    /// <summary>
    /// 简单工厂
    /// </summary>
   public class PeopleFactory
    {
        public People getPeople(string name)
        {
            if (name.Equals("Xiaoming"))
            {
                return new Xiaoming();
            }
            else if (name.Equals("Xiaohong"))
            {
                return new Xiaohong();
            }
            return null;
        }
    }



    public class Xiaoming : People
    {
        public void Eat()
        {
            Console.WriteLine("小明吃饭");
        }

        public void run()
        {
            Console.WriteLine("小明跑步");
        }


        public void wear()
        {
            Console.WriteLine("小明穿衣");
        }
    }

    public class Xiaohong : People
    {
        public void Eat()
        {
            Console.WriteLine("小红吃饭");
        }

        public void run()
        {
            Console.WriteLine("小红跑步");
        }


        public void wear()
        {
            Console.WriteLine("小红穿衣");
        }
    }

    public interface People
    {
        void Eat();

        void run();

        void wear();
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp6
{
    /// <summary>
    /// 策略模式
    /// </summary>
  public  class StrategySign
    {
        private People people;     

        public StrategySign(People people)
        {
            this.people = people;
        }

        public StrategySign(string name)
        {
            if (name.Equals("Xiaoming"))
            {
                this.people = new Xiaoming();
            }
            else if (name.Equals("Xiaohong"))
            {
                this.people = new Xiaohong();
            }
        }

        public void run()
        {
            people.Eat();
            people.run();
            people.wear();
        }

    }
}

           //简单工厂
            PeopleFactory peopleFactory = new PeopleFactory();
            People people = peopleFactory.getPeople("Xiaohong");
            people.Eat();

            //策略模式
            StrategySign strategySign = new StrategySign("Xiaohong");
            strategySign.run();
            Console.Read();