Regular Expressions 101

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:/\d+)?

?repeats the group contents below at most once:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\d+a Unicode decimal digit, repeated at least once

Positive Lookahead(?=\s?rooms?\b)

\s?optionally matches a Unicode whitespace character

roomthe literal text room (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

\ba Unicode word boundary

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\d+(?:/\d+)?(?=\s?rooms?\b)

New

I have some sentence like "Apartment at Chennai has 4 rooms with a swimming pool" "this apartment has 2/3 room with a coridor"