Regular Expressions 101

1st Alternative(\d+[A-Za-z\d]+\d*)

Group 1(\d+[A-Za-z\d]+\d*)

\d+a Unicode decimal digit, repeated at least once

Character Class[A-Za-z\d]+

+matches at least one character from the set below:

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

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

\da Unicode decimal digit

\d*a Unicode decimal digit, repeated any number of times

2nd Alternative([A-Za-z]+[\d]+[A-Za-z\d]*)

Group 2([A-Za-z]+[\d]+[A-Za-z\d]*)

Character Class[A-Za-z]+

+matches at least one character from the set below:

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

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

Character Class[\d]+

+matches at least one character from the set below:

\da Unicode decimal digit

Character Class[A-Za-z\d]*

*matches any number of characters from the set below:

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

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

\da Unicode decimal digit

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(\d+[A-Za-z\d]+\d*)|([A-Za-z]+[\d]+[A-Za-z\d]*)

New

1dsd1dfg15gh54gh454
fdg2fgdf22fdg
5454
542fdg22d
thisword2H2g2d
dfsdfsdf

https://stackoverflow.com/questions/59800512/ 510557XXXXXX2302 Normal words 1601371803 NhLw6NlR0EksRWkLddEo7NiEvrg https://www.google.com/search?q=some+google+search&oq=some+google+search&aqs=chrome..69i57j0i22i30l8j0i390.4672j0j7&sourceid=chrome&ie=UTF-8

Regular Expression

Substitution