using System;

/// <summary>
/// Random 算法相关方法
/// </summary>
public partial class Utils
{
    /// <summary>
    /// 随机种子
    /// </summary>
    private static Random rnd = new Random(Guid.NewGuid().GetHashCode());

   /// <summary>
   /// 普通随机方法
   /// </summary>
   /// <param name="min"></param>
   /// <param name="max"></param>
   /// <returns></returns>
    public static int random(int min, int max)
    {
        return rnd.Next(min, max);
    }

    /// <summary>
    /// 在1到1万之间取一个随机值
    /// </summary>
    /// <returns></returns>
    public static int random10K()
    {
        return random(1, 10000);
    } 
 
    /// <summary>
    /// 直接计算百分比是否落在区间内,相当于骰一次100面骰子,且结果正好小于参数指定的值.
    /// </summary>
    /// <param name="percent">百分之x(精度±0.01%)</param>
    /// <returns>true 本地投筛子成功, false 失败</returns>
    public static bool randomPercent(int percent)
    {
        return (random(1, 10000) / 100) <= percent;
    }

}