#1613Hard· asked at 2 companies
Remove Invalid Parentheses
Hosted on LeetCode
Solve it on LeetCode, track it here.
This problem's full statement lives on LeetCode. Open it in a new tab, then come back to mark it solved, add notes and keep your streak.
LeetCode Premium locked?
Most company-tagged LeetCode problems are behind Premium. If you have ChatGPT Plus or Claude Pro, ask it for the full statement, examples and constraints. The buttons below open a chat with the prompt already filled in.
What we know
Example 1
Input: s = "()())()" Output: ["(())()","()()()"]
Example 2
Input: s = "(a)())()" Output: ["(a())()","(a)()()"]
Example 3
Input: s = ")(" Output: [""]
Constraints
- •
1 <= s.length <= 25 - •
sconsists of lowercase English letters and parentheses '(' and ')'. - •
There will be at most 20 parentheses in
s.