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Valid Parentheses: Syntax Tree Validator
Real-World Engineering Context
Directly used in compilers and AST parsers (such as Babel, SWC, and TypeScript compiler) to validate code syntax before compilation.
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.
Sample Test Cases
Input: ["()"]
Expected: true
Input: ["()[]{}"]
Expected: true
Input: ["(]"]
Expected: false
Input: ["{[]}"]
Expected: true
Constraints
- 1 <= s.length <= 10^4
- s consists of parentheses only '()[]{}'.
Language:
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