Simple regex match numbers with or without hyphen

Asked Apr 18 '21 at 18:23

Active Apr 18 '21 at 18:23

Viewed 28 times

I am trying to match the the numbers, where some could be with or without a hyphen "-"

example one: 1: 3

example two: 24: 9-7

I tried the following:

(\d+): ((\d+)-(\d+)|(\d+))

and replace with:

A=\1\nB=\2\nC=\3\n

It works well for the first example, but not for the one with the hyphen. It gives the output:

A=24
B=9-7
C=9

Where it should be:

A=24
B=9
C=7

When I tried this:

(\d+): (?:(\d+)-(\d+)|(\d+))

the second one was OK, but not the first.

asked Apr 18 '21 at 18:23

Mike

3

You need `(\d+): (\d+)(?:-(\d+))?` ([demo](https://regex101.com/r/GNDSwI/1)) – Wiktor Stribiżew Apr 18 '21 at 18:26
It worked.. Thanks! Do I close the question? Or you'd add the answer with an explanation to accept it? – Mike Apr 18 '21 at 18:30
1

I agree. This is a suitable dup target [How do I make part of a regex match optional?](https://stackoverflow.com/questions/12451731/how-do-i-make-part-of-a-regex-match-optional) – 41686d6564 stands w. Palestine Apr 18 '21 at 18:47

0 Answers0