Regular Expressions 101

Group 1(-|\+)?

?repeats the group contents below at most once:

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

Group 2(-|\+)?

?repeats the group contents below at most once:

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative\+

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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.

Search reference

Regular Expression

(-|\+)?[0-9]+[a-z]\^(-|\+)?[0-9]+

New

4x^3-9x^2+10x-5-45x^-1