I gave my class a regex exercise to figure out a set of expressions that could match the password rules my bank uses. Here are the rules

  • A minimum of eight (8) characters not to exceed twelve (12). .
  • At least one alpha and one numeric character..
  • No special characters i.e., " ? * &, etc..
  • Can not contain a series of three sequential identical characters..
  • Be equal to or reverse of your USER ID.

    • Nobody (including me)has come up with anything simple for the forth rule (no 3 sequential identical). I was thinking that I could use backreferences and compare them in a loop but was wondering if there was a simpler way.

    Time flies like an arrow, fruit flies like banannas

    In reply to Regex Match for 3 repeated word characters by hsweet

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