Regular Expressions 101

^start of line

Character Class[A-Z]

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

\d{2}a digit, repeated exactly 2 times

Non-Capturing Group(?:\.\d{1,2}|\d{0,2})

1st Alternative\.\d{1,2}

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

2nd Alternative\d{0,2}

\d{0,2}a digit, repeated between 0 and 2 times

$end of line

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

^[A-Z]\d{2}(?:\.\d{1,2}|\d{0,2})$

New

D99
M00.0
M01.6
J98.3
T05.0
M96.81
D68.20
D3412
D34.

9D.0
6G
7H.
M96.811
J234.82
G687.1
GU87.11