Description
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.
Examples
Input:
s = "()"Output:
trueExplanation:
The string contains valid parentheses.
Input:
s = "()[]{}"Output:
trueExplanation:
All brackets are properly matched.
Input:
s = "(]"Output:
falseExplanation:
Mismatched bracket types.
Input:
s = "([)]"Output:
falseExplanation:
Brackets must be closed in correct order. The ')' closes before ']'.
Constraints
- •
1 ≤ s.length ≤ 10⁴ - •
s consists of parentheses only '()[]{}'.