87,907
社区成员
发帖
与我相关
我的任务
分享
/^\d{7}(\d)\1(\d)\2$/ //aabb
/^\d{7}(\d)(\d)\1\2$/ //abab
/^\d{7}(\d)\1\1\d$/ //aaab
//aabb,允许aaaa
(\d)\1(\d)\2$
//abab,允许aaaa
(\d)(\d)\1\2$
//aaab,允许aaaa
(\d)\1\1\d$
//同时允许
(?:(\d)\1(\d)\2|(\d)(\d)\3\4|(\d)\5\5\d)$
//以上如果不允许aaaa,第二个(\d)改为((?!\1)\d)
//如aabb,不允许aaaa
(\d)\1((?!\1)\d)\2$
//递增如果只是4位正则勉强可以做到,基本上类似于穷举了,意义不大,此为不允许7890
(0(?=1)|1(?=2)|2(?=3)|3(?=4|$)|4(?=5|$)|5(?=6|$)|6(?=7|$)|7(?=8|$)|8(?=9|$)|9(?=0|$)){4}$
//如果允许7890
(0(?=1|$)|1(?=2)|2(?=3)|3(?=4|$)|4(?=5|$)|5(?=6|$)|6(?=7|$)|7(?=8|$)|8(?=9|$)|9(?=0|$)){4}$
aabb (\d)\1(\d)\2$
abab (\d\d)\1$
aaab (\d)\1\1\d$