Efficient way in using lookarounds for regex split -

in c#, trying split following string

(hello)(world)(hello)(world)

into array of following format

arr[0] = ( arr[1] = hello arr[2] = ) arr[3] = ( arr[4] = world arr[5] = ) arr[6] = ( arr[7] = hello arr[8] = ) arr[9] = ( arr[10] = world arr[11] = )

i using following regex expression perform split , appears slow

regex.split(value1, @"(?<=\))|(?=\))|(?=\()|(?<=\()")

i no expert regex have gut feeling there regex expression provides same functionality in efficiently manner.

wondering if there better ways (more efficient regex expressions) implement same split in c#?

you try match these tokens instead:

regex.matches(value1, @"[()]|[^()]+")

here pattern [()]|[^()]+ matches either single ( or ), or sequence of characters except ( , ).

KHS