In my Google form I would like to authorize numbers and range of numbers like this:

1 to 9,
10 to 80,
90,
100

The separator can be , | ; or newline character, other examples

100
110 to 115
540

or

50 | 60 | 70 to 80 | 100

I was expecting this regEx to work (selecting Regular Expression > Matches > (to)|[0-9 \n|,;]*) but it failed.

Any idea ?

CodePudding user response：

You can use

^\d (?:(?:\s*(?:to|[\n|;,])\s*)\d )*\n*$

See the regex demo. Details:

• ^ - start of a string
• \d - one or more digits
• (?:\s*(?:to|[|;,])\s*\d )* - zero or more occurrences of
  • \s*(?:to|[\n|;,])\s* - to or |, ;, , or newline enclosed with zero or more whitespaces
  • \d - one or more digits
• \n* - zero or more newlines
• $ - end of string.