Given a string A of length N consists of only ’(‘ and ’)’. Answer M queries (L, R), find the length of the maximum correct bracket subsequence of sequence AL , AL + 1 , … , AR.
Note: A sequence T is a subsequence of A if T can be generated by deleting some elements of A.
First argument contains the string A Second argument contains a M x 2 grid B denoting queries
return an integer array denoting the answers to the respective queries
1 <= N,M <= 100000 1 <= l <= r <= N
Input 1: A = "())(())(())(" B = [[1, 1], [1, 3], [1, 12], [5,11]] Output 1: [0, 2, 10, 6] Explanation: [1,1] corresponds to "(" which has no correct bracket subsequence. [1,3] corresponds to "())" which has "()" as correct bracket subsequence.
NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a doubt? Checkout Sample Codes for more details.