678. Valid Parenthesis String
Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid. The following rules define a valid string: - Any left parenthesis '(' must have a corresponding right parenthesis ')'. - Any right parenthesis ')' must have a corresponding left parenthesis '('. - Left parenthesis '(' must go before the corresponding right parenthesis ')'. - '*' could be t
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solution.cppC++17
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