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Regex Number with or wothout thousands separator

Regex Number with or wothout thousands separator

(OP)
Hi all,

Have a number which can be a 1 or more digits. Max number has thousands separator

Trying to work out a regex to match any of these:

CODE

'345' -match '(\d{1,})' 
"Number is $($matches[1])" 
Works for single digit and 3 digit numbers

and

CODE

'3,345' -match '(\d{1}\,\d{1,3})' 

works for 4 digit numbers, but I can't get a single regex to find all three numbers

Is there an easy way to do this?

Example numbers

3

456

3,345

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