这篇文章主要介绍了c#实现微信红包功能，使用正态分布计算红包金额，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
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：
以上就是c#中如何实现微信红包功能的示例代码分享的详细内容。