NAME

LCS::BV - Bit Vector (BV) implementation of the Longest Common Subsequence (LCS) Algorithm

SYNOPSIS

  use LCS::BV;

  $alg = LCS::BV->new;
  @lcs = $alg->LCS(\@a,\@b);

ABSTRACT

LCS::BV implements Algorithm::Diff using bit vectors and is faster in most cases, especially on strings with a length shorter than the used wordsize of the hardware (32 or 64 bits).

DESCRIPTION

CONSTRUCTOR

new()

Creates a new object which maintains internal storage areas for the LCS computation. Use one of these per concurrent LCS() call.

METHODS

LLCS(\@a,\@b)

Return the length of a Longest Common Subsequence, taking two arrayrefs as method arguments. It returns an integer.

LCS(\@a,\@b)

Finds a Longest Common Subsequence, taking two arrayrefs as method arguments. It returns an array reference of corresponding indices, which are represented by 2-element array refs.

EXPORT

None by design.

SEE ALSO

Algorithm::Diff

AUTHOR

Helmut Wollmersdorfer <helmut.wollmersdorfer@gmail.com>

COPYRIGHT AND LICENSE

Copyright 2014-2019 by Helmut Wollmersdorfer

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.