easyStackStrings 0 views
Valid Parentheses
Determine if a string of brackets is properly matched and nested.
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 bracket.
- 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
Input: s = "()[]{}"
Output: true
Example 3
Input: s = "(]"
Output: false
Constraints
- 1 <= s.length <= 10^4
- s consists of parentheses only '()[]{}'.
Hints
Companies
No companies reported yet.
Discussion
Sign in to join the discussion.
Loading discussion...
Test results
No test cases yet.