[LeetCode] 20. Valid Parentheses - 문제풀이
Description 주어진 문자열에서 에서 괄호가 순서대로 닫혔는지 여부를 확인하여 반환하는 문제입니다. 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. Example 1: Input: s = "()" Output: true Example 2: Input: s = "()[]{}" Output:..
