Regular Expressions 101

Group 1((?<=\d)(?=\D)|(?=\d)(?<=\D))

1st Alternative(?<=\d)(?=\D)

Positive Lookbehind(?<=\d)

\da Unicode decimal digit

Positive Lookahead(?=\D)

\Dany character that is not a Unicode decimal digit

2nd Alternative(?=\d)(?<=\D)

Positive Lookahead(?=\d)

\da Unicode decimal digit

Positive Lookbehind(?<=\D)

\Dany character that is not a Unicode decimal digit

Negative Lookahead(?![^\(]*\))

Negated Character Class[^\(]*

*matches any number of characters outside the set below:

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

((?<=\d)(?=\D)|(?=\d)(?<=\D))(?![^\(]*\))

New

A sample string 20 something
Some text (just as 1 example) 2 more words
Some text (just as 1/4 example) 2/8 more words