SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Wästlund Johan) ;pers:(Karlander Johan)"

Search: WFRF:(Wästlund Johan) > Karlander Johan

  • Result 1-2 of 2
Sort/group result
   
EnumerationReferenceCoverFind
1.
  • Eriksson, Henrik, et al. (author)
  • Sorting a bridge hand
  • 2001
  • In: Discrete Mathematics. - 0012-365X .- 1872-681X. ; 241:1-3, s. 289-300
  • Journal article (peer-reviewed)abstract
    • Sorting a permutation by block moves is a task that every bridge player has to solve every time she picks up a new hand of cards. It is also a problem for the computational biologist, for block moves are a fundamental type of mutation that can explain why genes common to two species do not occur in the same order in the chromosome, It is not known whether there exists an optimal sorting procedure running in polynomial time. Bafna and Pevzner gave a polynomial time algorithm that sorts any permutation of length n in at most 3n/4 moves. Our new algorithm improves this to [(2n - 2)/3] for n greater than or equal to 9. For the reverse permutation, we give an exact expression for the number of moves needed, namely [(n + 1)/2]. Computations of Bafha and Pevzner up to n = 10 seemed to suggest that this is the worst case; but as it turns out, a first counterexample occurs for n = 13, i.e. the bridge player's case. Professional card players never sort by rank, only by suit. For this case, we give a complete answer to the optimal sorting problem.
  •  
2.
  • Eriksson, Henrik, et al. (author)
  • Sorting a bridge hand.
  • 2001
  • In: Discrete Mathematics. - 0012-365X .- 1872-681X. ; 241:1-3, s. 289-300
  • Journal article (peer-reviewed)
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Eriksson, Henrik (2)
Karlander, Johan (2)Undo refine
Eriksson, Kimmo (2)
Svensson, Lars-Erik (1)
Wästlund, Johan, 197 ... (1)
Svensson, Lars (1)
show more...
Wästlund, Johan (1)
show less...
University
Royal Institute of Technology (1)
Linköping University (1)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2001 (2)

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view