A script that substitutes place of numbers

[SunFlower16]

In my document, there are plenty of texts with this look: 
(XXXX-YYYY)
two four-digit numbers that are separated with a hyphen. I'm looking for a script that substitute the place of these two numbers, so the final result would be:
(YYYY-XXXX)
Could someone please help me with that?

[brianp311 · Accepted solution]

You can just use GREP in your Find/Replace panel:

Find: (\d{4})-(\d{4})
Change: $2-$1

[SunFlower16]

Thanks a million for your help.
Out of curiosity, I'm thinking of improving it., and adding a condition to it. This means that if the number XXXX is greater than YYYY, swap their positions, and if XXXX is less than YYYY, do nothing. I don't think that is practical with the find/replace feature, and can be implemented with scripts.

[Laubender · Accepted solution]

You want to switch the order of the two number blocks?

Should be doable with a GREP Find/Change action if the formatting for both number blocks is exactly the same.

Is that the case?

Try this pattern for GREP Find:

\<(\d{4})(-)(\d{4})\>

And this one for GREP Change:

$3$2$1

Regards,
Uwe Laubender

( ACP )

[brianp311]

Reworking my similar response here: https://community.adobe.com/t5/indesign-discussions/id-script-to-increase-numbers/m-p/12884070#M4739...

Edit, sorry, had my logic wrong. It's fixed now. 

var d = app.activeDocument;
var f = "(\\d{4})-(\\d{4})";
app.findGrepPreferences = app.changeGrepPreferences = null;
app.findGrepPreferences.findWhat = f;
var fs = d.findGrep();
var c = 0;
var t, i, fir, sec;
for (var i = 0; i < fs.length; i++) {
    t = fs[i].contents.split("-");
    fir = t[0];
    sec = t[1];
    if (Number(fir) > Number(sec)) { 
        fs[i].contents = sec + "-" + fir;
        c++;
    }
}
alert(c + " changes made");

[SunFlower16]

Thanks for your code. It works great, but there's a slight problem. The code doesn't look for digits only in the prantheses, as you see in the picture that it founded two four-digit numbers that are actually numbers of a URL. 
The digits that only need swapping are in the parentheses. It must only go through the digits that are between parentheses, which means that (XXXX-YYYY) must be swapped, but XXXX-YYYY must not. 
I tried to modify yours, but since I'm a newbie I couldn't.

[Laubender · Accepted solution]

Could you post the URL where this happened?

You could also use my suggestion for Find GREP that is a bit tighter.

For the script exchange this:

var f = "(\\d{4})-(\\d{4})";

with:

var f = "\\<\\d{4}-\\d{4}\\>" ;

Regards,
Uwe Laubender

( ACP )