【设计模式】——策略模式之赌球风波

本文主要是介绍【设计模式】——策略模式之赌球风波，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

前提摘要：

今天晚上世界杯进行淘汰赛，一场重头戏是巴西队和智利队。小华是内马尔的粉丝，他希望巴西队能赢，小玉认为智利队是黑马，能赢巴西队。于是二人打赌，赌资为每个球10元，比如两队进5球，则输的一方需出50元；小华又加了一条，如果内马尔进球则赌资加10元；小玉又加了一条，如果两队90分钟之内打平，需点球决胜负，则说明两队实力相近，赌资减少20%

策略模式：

围绕赌资的多少，抽象出一个父类，然后三个具体算法类继承父类，再用一个策略选择类为算法类和界面类承上启下，界面部分根据相应要求给出代码！结构图为：

编写代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace 策略模式
{public partial class 赌球那点事 : Form{public 赌球那点事(){InitializeComponent();}//赌资抽象类abstract class CashSuper{public abstract double acceptCash(double money);}//正常情况下赌资子类class CashNormal : CashSuper{public override double acceptCash(double money){double result = money;return money;}}//内马尔进球后的赌资class CashAdd : CashSuper{private double goalsNeymar = 0.0d;private double moneyAdd = 0.0d;public CashAdd(string goalsNeymar, string moneyAdd){this.goalsNeymar = double.Parse(goalsNeymar);this.moneyAdd = double.Parse(moneyAdd);}public override double acceptCash(double money){double result = money;if (goalsNeymar > 0)result = money + goalsNeymar * moneyAdd;return result;}}//90分钟未分胜负，需点球时赌资class CashRebate : CashSuper{private double moneyRebate = 1d;public CashRebate(string moneyRebate){this.moneyRebate = double.Parse(moneyRebate);}public override double acceptCash(double money){return money * moneyRebate;}}//CashContext类class CashContext{private CashSuper cs;public CashContext(CashSuper csuper){this.cs = csuper;}public double GetResult(double money){return cs.acceptCash(money);}}

private void button3_Click(object sender, EventArgs e){double total = 0.0d;CashContext cc = null;switch (cmbType.SelectedItem .ToString()){case "正常计算":cc = new CashContext(new CashNormal());break;case "内马尔进球":cc = new CashContext(new CashAdd("1", "10"));break;case "点球大战":cc = new CashContext(new CashRebate("0.8"));break;}double totalPrices = 0d;totalPrices = cc.GetResult (Convert.ToDouble(txtPrice.Text) * Convert.ToDouble(txtNum.Text));total = total + totalPrices;txtShow.Text = "单价：" + txtPrice.Text + "进球数：" + txtNum.Text+ " " + cmbType.SelectedItem + " 合计：" + totalPrices.ToString();label10.Text = total.ToString();}private void 赌球那点事_Load(object sender, EventArgs e){cmbType.Items.AddRange(new object[] { "正常计算", "内马尔进球", "点球大战" });cmbType.SelectedIndex = 0;}}
}

运行：

假如巴西3:2智利，内马尔有进球，则：