Regular Expressions Problem

Question

https://code.sololearn.com/WYEWZ5P0Sr79/?ref=app

Plz tell how ? is used for two different purposes
First for lazy matching
Second for the existence of letter
How ? Behaves differently?

Answer 1

This is a great question. Thanks for sharing. Even I got confused a little 😃

https://javascript.info/regexp-greedy-and-lazy

But going through this awesome article the purpose of '?' as lazy quantifier became crystal clear 👌

This article explains very clearly how the use '?' after other identifiers like '* 'or in your case '+' makes it lazy and hence able to find multiple matches.

I am off to my favorite regex playground to play with this myself.
https://regex101.com/

Answer 2

Morpheus 😄 thanks

Answer 3

Burey
Calviղ
Morpheus
BENOTMANE
Schindlabua

Answer 4

Please see:

https://code.sololearn.com/WHl9x8w4dldn/?ref=app

Answer 5

Bartas Dausynas yes when I done solving algorithm problem with many If else, loops and many lines of code and then see other solutions they solve the same problem with just one line of regex.

Answer 6

What is the answer

Answer 7

Said