Problem Description
Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
An input string is valid if:
1. Open brackets must be closed by the same type of brackets.
2. Open brackets must be closed in the correct order.
3. Every close bracket has a corresponding open bracket of the same type.
Example:
Input: s = "()"
Output: true
Input: s = "()[]{}"
Output: true
Input: s = "(]"
Output: false
Constraints:
- 1 <= s.length <= 10^4
- s consists of parentheses only '()[]{}'.
JavaScriptPress Ctrl+Enter to run tests
Loading editor...
Test Cases
Test 1
Simple valid
Input:
[
"()"
]Expected:
trueTest 2
Multiple types valid
Input:
[
"()[]{}"
]Expected:
trueTest 3
Mismatched types
Input:
[
"(]"
]Expected:
false+ 2 hidden tests