20. Valid Parentheses

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Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: - Open brackets must be closed by the same type of brackets. - Open brackets must be closed in the correct order. - Every close bracket has a corresponding open bracket of the same type. Example 1: Input: s = "()" Output: true Example 2: I

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solution.cppC++17

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