C#中如何实现微信红包功能的示例代码分享

本文实例为大家分享了C#仿微信红包功能的具体代码，供大家参考，具体内容如下

Program.cs代码:

class Program    {      static void Main(string[] args)      {        //初始化要发起的红包基础数据        double total = 100;        int num = 50;        double min = 0.01;        string temp;        bool flag = false;        Console.WriteLine(string.Format("是否需要自定义红包金额和数量（默认{0}元/{1}人）Y/N：", total, num));        temp = Console.ReadLine();        if (temp.Trim().ToLower().Equals("y") || temp.Trim().ToLower().Equals("yes"))        {          Console.WriteLine("请输入你要发起的红包金额：");          do          {            temp = Console.ReadLine();            flag = double.TryParse(temp, out total);            if (!flag)            {              Console.WriteLine("金额必须为整数或小数，请重新输入：");            }          } while (!flag);          Console.WriteLine("请输入你要发起的红包个数：");          do          {            temp = Console.ReadLine();            flag = int.TryParse(temp, out num);            if (!flag)            {              Console.WriteLine("红包个数必须为整数，请重新输入：");            }          } while (!flag);        }          total -= min * num;        if (total < 0)        {          Console.WriteLine("抱歉，你的金额不足！");          return;        }          //产生正态分布的随机红包金额，并计算相关的金额和数量保证数据的准确性        double average = total / num;        double variance = 1;        Random u1 = new Random();        Random u2 = new Random();        double[] nums = new double[num];          for (int i = 0; i < num; i++)        {          double? result = total;          if (i < num - 1 && total > 0)          {            do            {              result = Round((double)Normal(u1.NextDouble(), u2.NextDouble(), average, variance), 2);            } while (result == null || result < 0);            if (total > result)            {              total = (double)Round((total - (double)result), 2);            }            else            {              result = total;              total = 0;            }          }          else if (i == num - 1)          {            total = 0;          }          nums[i] = Math.Round(min + (double)result, 2); //浮点运算问题，这里需要四舍五入数据才正确            Console.WriteLine(string.Format("第{0}个红包金额：{1}", i + 1, (min + result)));          Console.WriteLine("剩余金额：" + ((i != num - 1 && total == 0) ? min * (num - i - 1) : total + (min * (num - i - 1))));        }        Console.WriteLine("最大金额：" + nums.Max());        Console.WriteLine("最小金额：" + nums.Min());        Console.WriteLine("总额：" + Round(nums.Sum(), 2));        Console.WriteLine("初始方差：" + variance);        Console.WriteLine("结果方差：" + Variance(nums));        Console.WriteLine("按任意键退出！");          Console.ReadKey();      }        /// <summary>      /// 产生符合正态分布的随机数      /// </summary>      /// <param name="u1">正态分布第一个随机数</param>      /// <param name="u2">正态分布第二个随机数</param>      /// <param name="averageValue">正态期望(平均值)</param>      /// <param name="variance">正态标准差(Math.Sqrt(方差))</param>      /// <returns></returns>      public static double? Normal(double u1, double u2, double averageValue, double variance)      {        double? result = null;        try        {          result = averageValue + Math.Sqrt(variance) * Math.Sqrt((-2) * Math.Log(u1)) * Math.Sin(2 * Math.PI * u2);        }        catch (Exception)        {          result = null;        }          return result;      }        /// <summary>      /// 求一组数据的方差      /// </summary>      /// <param name="list">要求的数组</param>      /// <returns></returns>      public static double Variance(double[] nums)      {        double average = nums.Sum() / nums.Length;        double sum = 0;        double variance = 0;        foreach (double num in nums)        {          sum += Math.Pow((num - average), 2);        }        variance = sum / nums.Length;          return variance;      }        /// <summary>      /// 截取小数指定小数位，且不四舍五入      /// </summary>      /// <param name="originNum">要截取的小数</param>      /// <param name="lastNum">截取小数后位数</param>      /// <returns></returns>      public static double? Round(double originNum, int lastNum)      {        double? result = null;        int index = originNum.ToString().IndexOf('.');        if (index != -1)        {          string temp = originNum.ToString();          result = Convert.ToDouble(temp.Substring(0, index + 1) + temp.Substring(index + 1, Math.Min(temp.Length - index - 1, lastNum)));        }        if (result == 0)        {          result = null;        }        else if (index == -1)        {          result = originNum;        }          return result;      }    }

运行结果：

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