What you really need is to align the two texts with a "dynamic programming" algorithm. This is a common task in bioinformatics - but the atomic unit there is a single character - and there is a small number of expected characters (usually 4 or 20). You would have to hack it a fair bit to work with an array of words from an essentially unlimited "character set" - but I haven't looked in detail at the code:

Bio::Tools::dpAlign

For quick and dirty I would extend the hash comparison approach to handle words, word pairs, triplets and maybe more. Also maybe keep searching CPAN maybe there's something else out there.

In reply to Re^3: Is it possible to find the matching words and the percentage of matching words between two texts? by uncoolbob
in thread Is it possible to find the matching words and the percentage of matching words between two texts? by supriyoch_2008

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