The idea here is to repeatedly replace occurrences of balanced parentheses pairs ("()", "{}", "[]") with an empty string. This continues until no more replacements are possible. If the final string is ...
A bracket is considered to be any one of the following characters: (, ), {, }, [, or ]. Two brackets are considered to be a matched pair if the opening bracket (i.e., (, [, or {) occurs to the left of ...
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