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Engineering
Data Structures and Algorithms
class Solution(object):     def generateParenthesis(self, n):         def backtrack(left, right, combination):             if left == 0 and right == 0:                 result.append(combination)                 return             if left > right:                 return             if left > 0:                 backtrack(left - 1, right, combination + "(")             if right > 0:                 backtrack(left, right - 1, combination + ")")           result = []         backtrack(n, n, "")         return result   Give the time and space complexity of this algorithm in Big O notation

class Solution(object):     def generateParenthesis(self, n):         def backtrack(left, right, combination):             if left == 0 and right == 0:                 result.append(combination)                 return             if left > right:                 return             if left > 0:                 backtrack(left - 1, right, combination + "(")             if right > 0:                 backtrack(left, right - 1, combination + ")")           result = []         backtrack(n, n, "")         return result   Give the time and space complexity of this algorithm in Big O notation

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class Solution(object):

    def generateParenthesis(self, n):

        def backtrack(left, right, combination):

            if left == 0 and right == 0:

                result.append(combination)

                return

            if left > right:

                return

            if left > 0:

                backtrack(left - 1, right, combination + "(")

            if right > 0:

                backtrack(left, right - 1, combination + ")")

 

        result = []

        backtrack(n, n, "")

        return result

 

Give the time and space complexity of this algorithm in Big O notation

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