Valid Parentheses
Given a string `s` of just the characters '()[]{}', return true if every opening bracket is closed by the matching type in the correct order.
Examples
in: s = "()[]{}"
out: true
all matched
in: s = "(]"
out: false
mismatched types
Constraints
- 0 <= len(s) <= 10^4
- s consists of bracket characters only
Hints