CODEWITHSUNDEEP
regex
rckl
rckl

Reputation: 15

regex comma seperated list

I need a regex expression that will match a comma separated list of integers. I've tried many things, and they work, but they don't work well enough for what I need.

The expression must reject any trailing comma (ex. 1,2,), any double commas (ex 1,1,,23), and any non-numeric character (ex. 1,a,2,43,2).

There must also be no spaces between the numbers. The numbers themselves can be of any length.

An example of a string that should be matched is 1,2,3,4,5,9,234

I appreciate anybody who can help me with this.

Upvotes: 0

Views: 75

Answers (1)

Gurmanjot Singh
Gurmanjot Singh

Reputation: 10360

Try this regex:

^\d+(?:,\d+)*$

Click for Demo

Explanation:

  • ^ - asserts the start of the line
  • \d+ - matches 1+ digits
  • (?:,\d+)* - matches 0+ occurrences of a comma followed by 1+ digits
  • $ - asserts the end of the line

Upvotes: 2

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