InterviewBit Problems   Generate all Parentheses II : Unsolved

About the Generate all Parentheses II : Unsolved category (1)
Very nice problem, need good observational skill using recursion (2)
Easy C++ solution with comments (5)
This is what I get if I run it here. () (((()))) ((()())) ((())()) ((()))() (()(( (9)
Iterative Approach C++ (1)
Some error with input A = 4 (1)
How to sort the obtained vector? (3)
Recursion output cannot be static (4)
My Answer is correct still compiler says wrong (2)
I m getting double o/p (3)
Maximum limit of n ? it definitely cant be INT_MAX; (2)
What is the criteria to compare 2 strings? (2)
I am getting the exact required output in testing with custom intput but while te (1)
In all the backtracking program i get a space before my output in Test cases! (1)