Question

I have this pattern:

Pattern.compile("T([0-9]*)");

which works fine for positive numbers but I need it to also do negative numbers for instance “T-1T3T44″ should work. Or maybe use space instead of ‘T’ so it should work for strings like this:”-1 2 3 2 -1 6 2″. Sorry I haven’t really used regular expressions before.So any suggestions? Thanks.

Answer 1

Have you thought of trying:

"T(-?[0-9]+)"

You’ll notice I’ve also changed the "*" (zero or more) to "+" (one or more) since "" isn’t technically a number 🙂