me find the values "ddd", "dsdd", "ddsd" from the list below: "150 EUR 15 000 EUR 150 150 EUR 1 500 EUR".
I tried:
/(\d{3})|(\d+\s\d{1,2})/gm
The result of the test: (The bold value should not be matched)
The second part of your alternation \d+\s\d{1,2} matches only a single whitspace char only once, and \d+ matches 1 or more digits and \d{1,2} match one or 2 digits.
To match 3 digits, with either a whitespace char between the first and second, or second and third digit, or match 3 digits only:
\b\d(?:\s?\d|\d\s)\d
The pattern matches:
\b A word boundary to prevent a partial word match\d Match a digit(?: Non capture group for the alternatives
\s?\d match an optional whitspace char followed by a digit| Or\d\s Match a digit followed by a whitspace char) Close the group\d Match a digitSee a regex demo