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Regular Expression - Determine if a string matches the "AABB" pattern

2022-08-09 05:54:00 【Teng Qingshan YYDS】

//AABB(.)\1(.)\2//AAAB(.)\1\1.//ABBB.(.)\1\1//ABAB(.)(.)\1\2

All of the above are that A and B can be the same, if A and B have different requirements

//AABB(.)\1((?!\1).)\2//AAAB(.)\1\1(?!\1).//ABBB(.)((?!\1).)\2\2//ABAB(.)((?!\1).)\1\2

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