(\w+)(\s)(\w+)\2(\w+) in this exercise we have to use capture groups and then replace the string order to 'three two one'. But first, when you are using the capture group you may have asked yourself why the code below does not work: (\w+)(\s)\1\2\1 to match the sting "one two three"...

Search and change many regex matches

Validates client IDs

This pattern matches inconsistent addresses that have various street names and coordinates. This captures the Address 1 & 2, Type of Street, Coordinates (NE, NW, SE,SW) City, State, and Full zip

Ensure that Salesforce Flow name meets the following standards: - -

Validate comma-separated list of values (allowed: words; digits; special characters; single non-trailing non-leading spaces;)

Matches the data sent by the twitch IRC and captures into various groups

text has numbers

match some emails and extract their local part and domain