Wrong test case given

#1

According to gfg both the test cases i.e
(((a+(b))+(c+d))) and
((a+(b))+(c+d))
should return yes and according to cb the last one is returning no so pls help in understanding the situation and identify error in my code
link for gfg:-https://www.geeksforgeeks.org/expression-contains-redundant-bracket-not/
my code:-https://ide.codingblocks.com/s/339420

#2

https://ide.codingblocks.com/s/339421 this is my code

#3

hello @kunal81198
answer of both the test case should be yes.

image

include alphabets as well

#4

If i include alphabets then ((b) +a) would become correct

#5

yeah it is correct…

(a) -> valid case no redundant brackets
((a)) -> here we have one redundant bracket

#6

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