Checking critertia in else if block

[pranaynigam]

in the else if structure do we need to check s.top()!=’(’ ? since we are only adding ( to the stack so either the stack is empty or it has a ( to be paired with?

[aman212yadav (Aman Yadav)]

hello @

@pranaynigam

in the else if structure do we need to check s.top()!=’(’ ? since we are only adding ( to the stack so either the stack is empty or it has a ( to be paired with?

for this problem its redundant