[Biopython] Biopython project

[Alexey Morozov]

Just so that everyone understands: is it correct that given a string, your
algorithm can provide i-th permutation from a list of all permutations of
that string, sorted alphabetically?

ср, 20 мар. 2019 г. в 19:10, Spasso Tech <matheushfbrandao at gmail.com>:

> Good morning,
>
> My name is Matheus,
>
> I wrote an algorithm of permutation, this algorithm make any permutation
> with any string length.
>
> I every seen problems with the length of strings for a permutation because
> the algorithms that i see on the internet don't support permutation above
> 10 elements because of level of the processing.
>
> The permutators that i see enumerate the permutation but don,t access
> efficiently the permutations enumerate because firtst generate all
> permutations for after access te possition in one array.
>
> On my algorithm for example i can permute 50 elements that give
> 30414093201713378043612608166064768844377641568960512000000000000
> possibilities, if i need access the permutation order
> 15414232157133780436126081660647688443776415689605121234333 i just need to
> pass that number and i can access the permutation in order
> 42321571337804361260816606476884437764156896051212345511  in
>  fractions of seconds.
>
> This algorithm is written in Python and in C. They told me that genetics
> area is very usual for the application of this code.
>
> For example to permute the triplet code and generate all probability of
> encodes.
>
> In your project have this resource? My code have other mathematical
> characteristics that can be explorate is very interesting .
>
> Thank you for your patience and consideration.
> Sorry my English
>
> Regards,
>
> Matheus Henrique Ferreira Brandão
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-- 
Alexey Morozov,
LIN SB RAS, bioinformatics group.
Irkutsk, Russia.
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