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JT
Posts:
1,306
Registered:
4/7/12


Re: Time complexity, for finding all permutations from 1 to n
Posted:
Jun 20, 2013 5:05 AM


On 19 Juni, 14:14, jonas.thornv...@gmail.com wrote: > Den onsdagen den 19:e juni 2013 kl. 11:24:28 UTC+2 skrev jonas.t...@gmail.com: > > > I guess it is some 0(n)+x comparrisons, a linear algorithm using comparssons? > > > I think i have a linear algorithm that will do it without comparissons and doubles in linear time just a single swap for each new permutation table. > > > A setup table is needed to calculate sizes factorials and respective swap within. > > > Is this a known algorithm? Once the table created the algorithm run in linear swap time. The factorial table is used to find the size of the swaps. > > > There is no copies of tables within the linear swap, no doubles. > > Could someone give me a link pseudo code for the most effective known algorithm?
Here is Dirk Van der Mortels attempt not that impressive hangs up at 9 digits, of course there is much better ways. But the framework seem ok, so maybe i can use it to compare algorithms. How is permutations algorithm used generally, is it in gaming industri, or is there other applications for shuffle algorithms?
I did read a post here about someone who needed it for statistical analyse of datasamples, but i never understood what he was after, don't you sort the samples to make statistical analyse?
I was thinking doing a webpage comparing various algorithms for writing permutations, so if you can write some javascript code or pseudo code can you post it here.


Date

Subject

Author

6/19/13


JT

6/19/13


JT

6/20/13


JT

6/20/13


JT


