A correct edit-distance algorithm is going to be at least O(N^2) and maybe even O(N^3) to check all the different lengths and some strings can be 2000 chars. My code above was able to beat linear "wc". Of course the file was probably entirely cached in ram since I have a lot of that on this system. But I would not be surprised if a SSD could deliver data faster than an N^3 could process it.

In reply to Re^5: Suffix-prefix matching done right by NERDVANA
in thread Suffix-prefix matching done right by baxy77bax

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