Regular Expressions 101

Character Class[A-Z]?

?matches at most one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 1(\d+)

\d+a digit, repeated at least once

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

[A-Z]?(\d+)[A-Z]

New

123B456C798
-123B-456C-798