"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:1142004744.989115.288520@i39g2000cwa.googlegroups.com...
> Niklas Engfelt wrote:
>> Does anyone have a nice algorithm/method to increase all digits one
>> step, e.g. 123123 to 234234 and 4444 to 5555 and 999999 to 000000?
>
> Well, it depends what you mean by "in one step". In one method call?
> Very easily:
>
>    static string IncDigits(string text)
>    {
>        char[] chars = text.ToCharArray();
>
>        for (int i=0; i < chars.Length; i++)
>        {
>            char c = chars[i];
>            if (c >= '0' && c <='9')
>            {
>                // Not just c++ - wrap 9->0
>                c = (char)((((c-'0')+1)%10)+'0');
>                chars[i]=c;
>            }
>        }
>        return new string(chars);
>    }
>
> Jon
>

>Hi Jon,
>
>You are a tremendous help to all who come to this board, and I am always in
>awe of the completeness and clarity by which you communicate some very
>technical things.  That said, we do no student any favors by doing their
>homework for them.  We also make it difficult for teachers, since that
>particular problem can never be used again for homework (thanks to the power
>of Google).  As the son of two college professors, I come to you as a
>colleague to beg of you to set an excellent example for this board and to do
>your best to avoid helping a student to cheat on their homework.
>
>--
>--- Nick Malik [Microsoft]
>    MCSD, CFPS, Certified Scrummaster
>    http://blogs.msdn.com/nickmalik
>
>Disclaimer: Opinions expressed in this forum are my own, and not
>representative of my employer.
>   I do not answer questions on behalf of my employer.  I'm just a
>programmer helping programmers.

"Niklas Engfelt" <engf***@gmail.com> wrote in message
news:1142003521.247793.95240@z34g2000cwc.googlegroups.com...
> Does anyone have a nice algorithm/method to increase all digits one
> step, e.g. 123123 to 234234 and 4444 to 5555 and 999999 to 000000?
>
> Best regards
> Niklas
>