Regular Expressions 101

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

\d+a digit, repeated at least once

Character Class[-–]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

–the literal – (8211₁₀ / 20023₈ / 2013₁₆)

\(?optionally matches 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

?optionally matches 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)

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

\d+a digit, repeated at least once

\)?optionally matches the literal ) (41₁₀ / 51₈ / 29₁₆)

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

No unit tests · Add a test to get started

Search reference

Regular Expression

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

There are no unit tests, click to add some.