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Availity Essentials may represent claim validation rules as text containing nested grouping symbols. Given a string, determine whether all bracket characters are correctly matched and properly nested.
The input may contain parentheses (), square brackets [], and curly braces {}. Characters that are not brackets should be ignored. A string is valid when every opening bracket has the correct closing bracket, brackets close in last-in, first-out order, and no unmatched brackets remain.
Implement valid_brackets(s) and return True for valid input or False otherwise.
s, a string with length n, containing printable characters.(), [], and {} affect validity. All other characters are ignored.def valid_brackets(s):