<div dir="ltr">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?<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">ср, 20 мар. 2019 г. в 19:10, Spasso Tech <<a href="mailto:matheushfbrandao@gmail.com">matheushfbrandao@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><span style="font-family:sans-serif;font-size:12.8px">Good morning,</span><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">My name is Matheus,</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">I wrote an algorithm of permutation, this algorithm make any permutation with any string length.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">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.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">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.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">On my algorithm for example i can permute 50 elements that give 30414093201713378043612608166064768844377641568960512000000000000 </div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">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 </div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"> fractions of seconds.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">This algorithm is written in Python and in C. They told me that genetics area is very usual for the application of this code.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">For example to permute the triplet code and generate all probability of encodes.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">In your project have this resource? My code have other mathematical characteristics that can be explorate is very interesting .</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">Thank you for your patience and consideration.</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">Sorry my English </div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">Regards,</div><div dir="auto" style="font-family:sans-serif;font-size:12.8px"><br></div><div dir="auto" style="font-family:sans-serif;font-size:12.8px">Matheus Henrique Ferreira Brandão</div></div>
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<a href="https://mailman.open-bio.org/mailman/listinfo/biopython" rel="noreferrer" target="_blank">https://mailman.open-bio.org/mailman/listinfo/biopython</a></blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><font face="arial,helvetica,sans-serif">Alexey Morozov,<br>LIN SB RAS, bioinformatics group.<br>Irkutsk, Russia.<br></font></div>