[LeetCode] Valid Parentheses

1 · · Feb. 9, 2022, 5:49 a.m.
20. Valid Parentheses 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. ...