Regular Expressions 101

Group 1(\d+[-–](?:\d+|\(\d+([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?\)))

\d+a digit, repeated at least once

Character Class[-–]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

–the literal – (8211₁₀ / 20023₈ / 2013₁₆)

Non-Capturing Group(?:\d+|\(\d+([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?\))

1st Alternative\d+

\d+a digit, repeated at least once

2nd Alternative\(\d+([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?\)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\d+a digit, repeated at least once

Group 2([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?

?repeats the group contents below at most once:

Character Class[+\-*/^]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

\d+a digit, repeated at least once

Character Class[ ]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[+\-*/^]

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

Character Class[ ]?

?matches at most one character from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\d+a digit, repeated at least once

\)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.

Search reference

Regular Expression

(\d+[-–](?:\d+|\(\d+([+\-*/^]\d+[ ]?[+\-*/^][ ]?\d+)?\)))

(0–(2^63 - 1))
(1-(2^16 - 2))
(1-29999984)
(3-32)