/// <summary>
/// 10进制转换为62进制【混淆】
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public string ConfusionConvert(long num)
{
if (num.ToString().Length > MaxLength)
{
throw new Exception($"转换值不能超过最大位数{MaxLength}");
}
var n = num.ToString()
.PadLeft(MaxLength, '0')
.ToCharArray()
.Reverse();
return(Convert(long.Parse(string.Join("", n))).PadLeft(CodeLength, SeqKey.First()));
}
/// <summary>
/// 将62进制转为10进制【简单】
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
private long Convert(string num)
{
long v = 0;
int Len = num.Length;
for (int i = Len - 1; i >= 0; i--)
{
int t = SeqKey.IndexOf(num[i]);
double s = (Len - i) - 1;
long m = (long)(Math.Pow(62, s) * t);
v += m;
}
return(v);
}