Valid bracket sequence
Given a string of brackets '()[]{}', determine whether every bracket is closed by the same type in the correct order.
Implement
is_valid_parens(s: str) → boolExamples
in
["()[]{}"]outtrueWhat a strong answer looks like
State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
0:00 of about 25 min
solution.py
InputExpectedGot
["()[]{}"]truenot run yetsample