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The specs is missing a clarification that the expression does not need to be symmetric to pass, and that the only requirement necessary is that brackets are closed in correct order.
As in "()[]{}" is valid but "([)]{}" isn't.
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Stacks: Balanced Brackets
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The specs is missing a clarification that the expression does not need to be symmetric to pass, and that the only requirement necessary is that brackets are closed in correct order.
As in "()[]{}" is valid but "([)]{}" isn't.