Humm Makes me think...:)

Actually mathematical subsequences are defined as maps on a subset of N and have "holes"; for example consider u(2n) versus u(n). Still in the case of finite sequences (especially in the context of char strings) it seems *contiguous* would be a fair (even natural) requisite.

Looking at some implementations seems to indicate that the contiguous case is considered as the common useful case: 


% steph@ape (/home/stephan/w/tp) %
% perl -MString::LCSS -le 'print scalar String::LCSS::lcss(qw[xaxbcxdx
+ aybycyydy])'     


% steph@ape (/home/stephan/w/tp) %
% perl -MString::LCSS -le 'print scalar String::LCSS::lcss(qw[xabcdxxx
+xxx yyyabcdyyyyy])'
abcd

[download]

I get the same with the recent String::LCSS_XS 

% steph@ape (/home/stephan/w/tp) %
% perl -MString::LCSS_XS -le 'print scalar String::LCSS_XS::lcss(qw[xa
+bcdxxxxxx yyyabcdyyyyy])'
abcd

[download]
cheers --stephan

In reply to Re^6: Longest Common Subsequence Question by sgt
in thread Longest Common Subsequence Question by Anonymous Monk

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