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Spend a few minutes figuring out, for instance, the ten shortest strings that it'll match

Here are the first 12

"" "0" "00" "11" "000" "101" "0000" "1111" "1001" "1111" "00000" "10101"

Bonus points if you notice a pattern in the set of strings that it matches....

All the strings are reversable?

(I'm assuming that anchors were implied.)


In reply to Re: Regex refresher by dws
in thread Regex refresher by FoxtrotUniform

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