using
System;
using System.Security.Cryptography;
public class RNG
{
private static RNGCryptoServiceProvider rngp = new RNGCryptoServiceProvider();
private static byte [] rb = new byte [ 4 ];
/// <summary>
/// 产生一个非负数的乱数
/// </summary>
public static int Next()
{
rngp.GetBytes(rb);
int value = BitConverter.ToInt32(rb, 0 );
if (value < 0 ) value = - value;
return value;
}
/// <summary>
/// 产生一个非负数且最大值在 max 以下的乱数
/// </summary>
/// <param name="max"> 最大值 </param>
public static int Next( int max)
{
rngp.GetBytes(rb);
int value = BitConverter.ToInt32(rb, 0 );
value = value % (max + 1 );
if (value < 0 ) value = - value;
return value;
}
/// <summary>
/// 产生一个非负数且最小值在 min 以上最大值在 max 以下的乱数
/// </summary>
/// <param name="min"> 最小值 </param>
/// <param name="max"> 最大值 </param>
public static int Next( int min, int max)
{
int value = Next(max - min) + min;
return value;
}
}
using System.Security.Cryptography;
public class RNG
{
private static RNGCryptoServiceProvider rngp = new RNGCryptoServiceProvider();
private static byte [] rb = new byte [ 4 ];
/// <summary>
/// 产生一个非负数的乱数
/// </summary>
public static int Next()
{
rngp.GetBytes(rb);
int value = BitConverter.ToInt32(rb, 0 );
if (value < 0 ) value = - value;
return value;
}
/// <summary>
/// 产生一个非负数且最大值在 max 以下的乱数
/// </summary>
/// <param name="max"> 最大值 </param>
public static int Next( int max)
{
rngp.GetBytes(rb);
int value = BitConverter.ToInt32(rb, 0 );
value = value % (max + 1 );
if (value < 0 ) value = - value;
return value;
}
/// <summary>
/// 产生一个非负数且最小值在 min 以上最大值在 max 以下的乱数
/// </summary>
/// <param name="min"> 最小值 </param>
/// <param name="max"> 最大值 </param>
public static int Next( int min, int max)
{
int value = Next(max - min) + min;
return value;
}
}
