# C# 自定義60進位
## 自定義轉60進位

class Base60Help
{
    /// <summary>
    /// 進位
    /// </summary>
    static int _Base = 60;
    /// <summary>
    /// N進位,最大支持60
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    public static string IntToBaseN(int n,long input)
    {
        if(n > _Base)
        {
            throw new NotImplementedException();
        }
        StringBuilder sb = new StringBuilder();
        while (input >= 1)
        {
            int index = Convert.ToInt16(input % n);
            char code = Base60Code[index];
            sb.Insert(0, code);
            input = input / n;
        }
        return sb.ToString();
    }
    public static string IntToBase60(long input)
    {
        StringBuilder sb = new StringBuilder();
        while (input >= 1)
        {
            int index = Convert.ToInt16(input % _Base);
            char code = Base60Code[index];
            sb.Insert(0, code);
            input = input / _Base;
        }
        return sb.ToString();
    }
    public static Dictionary<int, char> Base60Code = new Dictionary<int, char>()
    {
        {0,'0'},{1,'1'},{2,'2'},{3,'3'},{4,'4'},{5,'5'},{6,'6'},{7,'7'},{8,'8'},{9,'9'},
        {10,'a'},{11,'b'},{12,'c'},{13,'d'},{14,'e'},{15,'f'},{16,'g'},{17,'h'},{18,'i'},{19,'j'},
        {20,'k'},{21,'m'},{22,'n'},{23,'o'},{24,'p'},{25,'q'},{26,'r'},{27,'s'},{28,'t'},{29,'u'},
        {30,'v'},{31,'w'},{32,'x'},{33,'y'},{34,'z'},{35,'A'},{36,'B'},{37,'C'},{38,'D'},{39,'E'},
        {40,'F'},{41,'G'},{42,'H'},{43,'I'},{44,'J'},{45,'K'},{46,'L'},{47,'M'},{48,'N'},{49,'P'},
        {50,'Q'},{51,'R'},{52,'S'},{53,'T'},{54,'U'},{55,'V'},{56,'W'},{57,'X'},{58,'Y'},{59,'Z'}
    };
}

###### tags: `C#`