Given a string of round, curly, and square open and closing brackets, return whether the brackets are balanced (well-formed).
Obs:
- Without using recursive regex
Examples:
1. () -> true
2. [] -> true
3. (()) -> true
4. ([]) -> true
5. ( -> false
6. ) -> false
7. ([)] -> false
8. ([])[]({}) -> true
9. ((() -> false