1249. Minimum Remove to Make Valid Parentheses
Channel: bab lobko
Date: 2024-04-06

Efficient solution to the Minimum Remove to Make Valid Parentheses.
In this video, we delve deep into a uniquely effective solution that does not explicitly use a stack but employs a clever two-pass strategy to ensure every parenthesis finds its match. The first pass meticulously scans the string from start to end, appending characters to a new string builder while keeping track of the balance between opening and closing parentheses. This ensures that every closing parenthesis encountered has a corresponding opening one before it.

However, what about the opening parentheses left unmatched? Enter the second pass—a backward journey through the string that smartly identifies and removes these excess opening parentheses, achieving the perfect balance required for a valid parentheses string.

Whether you're a beginner aiming to strengthen your basics or an experienced coder looking to brush up on your algorithmic strategies, this video provides valuable insights and a clear, understandable solution to a common yet tricky problem. Join us as we break down the solution, ensuring you'll walk away with a robust understanding and the confidence to tackle similar challenges in your coding journey.