static void Main(string[] args)
{
double totalAmount = 100;
int num = 10;
double minAmount = 0.01;
RedisClient client = new RedisClient("127.0.0.1", 6379);
Queue<double> qu = new Queue<double>();
Random r = new Random();
for (int i = 1; i < num; i++)
{
//
//(总金额-（总人数-第一个人）*最小金额)/(总人数-第一个人）
//安全金额
double safeAmount = (totalAmount - (num - i) * minAmount) / (num - i);

double money = NextDouble(r, minAmount * 100, safeAmount * 100) / 100;
money = Math.Round(money, 2, MidpointRounding.AwayFromZero);
totalAmount = totalAmount - money;
totalAmount = Math.Round(totalAmount, 2, MidpointRounding.AwayFromZero);
qu.Enqueue(money);
// Console.WriteLine("第" + i + "个红包：" + money + " 元，余额：" + totalAmount + " 元");
}
// Console.WriteLine("第" + num + "个红包：" + totalAmount + " 元，余额：0 元");
client.Add<Queue<double>>("hongbao", qu);

if (qu.Count > 0)
{
Queue<double> que = client.Get<Queue<double>>("hongbao");
//出红包
que.Dequeue();
}
else
{
//红包没了;
}
Console.ReadKey();
}

/// <summary>
/// 生成设置范围内的Double的随机数
/// eg:_random.NextDouble(1.5, 2.5)
/// </summary>
/// <param name="random">Random</param>
/// <param name="miniDouble">生成随机数的最大值</param>
/// <param name="maxiDouble">生成随机数的最小值</param>
/// <returns>当Random等于NULL的时候返回0;</returns>
protected static double NextDouble(Random random, double miniDouble, double maxiDouble)
{
if (random != null)
{
return random.NextDouble() * (maxiDouble - miniDouble) + miniDouble;
}
else
{
return 0.0d;
}
}