Anonymous Monk,
If you are looking for code and don't know about CPAN, you should check it out. There is Algorithm::LCS and Algorithm::Diff which both implement a ready-made LCS algorithm. If you need to find the LCS of more than 2 strings, I wrote Longest Common Subsequence.

Cheers - L~R

In reply to Re: Longest Common SubSequence Not Working Correctly by Limbic~Region
in thread Longest Common SubSequence Not Working Correctly by Anonymous Monk

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