Hm? Boyer-Moore prep is the same, O(m) in time and space. A good-shift table of length m is used. It might be more compact in practice.

If the problem is too large, divide it! Code a tuned search routine for fixed length (sub)needles, such that all tables fit into L2. My guess is KB needles can be done. Now the search becomes two-level. Top-level "alphabet" are the subneedles.

As for brute-force. The "Boyer-Moore beating assembler versions that utilize microcoded string search instructions" is a decades-old lesson. Tried to google for some edutaining links, but sadly, google has become ****.

In reply to Re^3: [OT] The interesting problem of comparing (long) bit-strings. by Anonymous Monk
in thread [OT] The interesting problem of comparing bit-strings. by BrowserUk

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