RegexdrillGroup without capturing
A regex exercise from Regexdrill. Solve it with a pattern box with live highlighting in your browser, checked against hidden test strings, and it is checked the moment you submit.
The task
Each match is one or more copies of ab or cd, immediately followed by a number. Capture only the number in group 1.
What this exercise teaches
(?:ab|cd)+(\d+) repeats the pairs inside a non-capturing group, which leaves group 1 for the digits.
A hint if you get stuck
(?:...) groups like parentheses but does not capture, so it does not take group number 1.
This exercise is part of Pro
Pro unlocks all 52 exercises, with worked solutions and progress saved to your account. The free exercises work without an account.
You create a free account first, so Pro is attached to it.
Monthly is charged today and then every month until you cancel, in one click from your account page. Lifetime is one payment with no renewals. Full refund within 14 days of paying.