My idea: xor the strings, find the position of the first non-null character in the result.

Update: no code was requested, so using the spoiler tag:

<Reveal this spoiler or all spoilers in this node or all in this thread>

If your strings only contain "a" and "b", you can use

<Reveal this spoiler>
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: String matching idea by choroba
in thread String matching idea by baxy77bax

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