The idea is that for long needles, you can discard their borders (the unaligned bits), search for the middle string using some efficient algorithm and only when it matches, check the borders.

update: oh, and BTW, I was not endorsing sundialsvc4 response, just stating that this time, besides all his typical non-sense there may actually be also some insight.

In reply to Re^7: [OT] The interesting problem of comparing bit-strings. by salva
in thread [OT] The interesting problem of comparing bit-strings. by BrowserUk

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