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Editorial Team
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Editorial Team
Asked: May 29, 20262026-05-29T22:17:58+00:00 2026-05-29T22:17:58+00:00

I have 4 complex regex patterns, A , B , C and D .

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I have 4 complex regex patterns, A, B, C and D. I need to locate all the patters that are of the format of A(B AND C AND D) where the order of B,C,D does not matter and C and D are optional. Is there a way to do such a thing in regex without writing all the possible permutations of B,C,D with or (|) between them?

I’m programming this in Java, and prefer to performance-friendly. Thanks!

Edit: Changing 3 complex patters to 4 complex regex patterns.

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  1. Editorial Team
    Editorial Team
    2026-05-29T22:17:59+00:00Added an answer on May 29, 2026 at 10:17 pm

    No. You have to write all the permutations. It is a limitation of the regular languages. Once you do it however, it will be as performance friendly as any other regular expression.

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