RegEx to match comma separated numbers with optional decimal part

Question

I\'ve a regex that matches comma separated numbers with an optional two digit decimal part in a given multiline text.

/(?<=\\s|^)\\d{1,3}(,\\d{3})*(\\.\\d         


        

Answer 1

/(?<=\s|^)(\d{1,3}(,\d{3})*(\.\d{2})?|\.(\d{2}))(?=\s|$)/m

Or taking into account some countries where . is used as a thousand seperator, and , is used as a decimal seperator

/(?<=\s|^)(\d{1,3}(,\d{3})*(\.\d{2})?|\d{1,3}(\.\d{3})*(,\d{2})?|\.(\d{2})|,(\d{2}))(?=\s|$)/m

Insane Regex for Internationalisation

/((?<=\s)|(?<=^))(((\d{1,3})((,\d{3})|(\.\d{3}))*(((?<=(,\d{3}))(\.\d{2}))|((?<=(\.\d{3}))(,\d{2}))|((?

Matches

14.23
14,23
114,114,114.23
114.114.114,23

Doesn't match

14.
114,114,114,23
114.114.144.23
,
.