Question: Write in Java, thx in advance Write a recursive method that takes as input an integer n and returns a list containing all valid combinations

Write in Java, thx in advance

Write a recursive method that takes as input an integer n and returns a list containing all valid combinations of n pairs of parentheses. Note that the list should not contain any repetition. For a combination of parentheses to be valid, all parentheses should be properly opened and closed.

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