Write a regex that matches 'ab' if a and b are both numbers and their sum equals 10.

Question

How do we write the above regex?

Edit: examples:
Matches: 55, 73, 91
Doesn't match: six4, a234, 145, 2a8, 2.08.0, 010

Answer 1

Just in case anyone is reading this in the future. I found a simple way to cheat.
https://code.sololearn.com/ca8r7j5hkX4A/?ref=app

Answer 2

Can you please provide example?

Answer 3

doubt this can be done as regex can't really do things such as add numbers

Answer 4

This task is better done by dividing it in two parts: first extract all digit pairs and second, filter those that add up to 10.

Answer 5

𝕾𝖆𝖌𝖆𝕿𝖍𝖊𝕲𝖗𝖊𝖆𝖙 💯 done!

Answer 6

hinanawi ok....... Thank you!
That's a great idea Kuba Siekierzyński! filter() KA-CHHING! Why didn't I think of that? Thank you!