Скачать или смотреть Longest Valid Parentheses - Stack In Use

In this video, we dive into the LeetCode “Longest Valid Parentheses” problem and break it down in the simplest possible way.
Using a stack, we track indexes, handle mismatches, and calculate the longest valid substring step by step — even if the string is full of tricky ( and ) combinations.

This problem is a great example of how a stack helps to:
• Keep track of parenthesis positions
• Detect invalid segments
• Compute the longest valid range efficiently

If you’re preparing for LeetCode, FAANG interviews, or want to strengthen your algorithmic thinking, this video is for you!

Topics covered:
• Stack (Data Structure)
• String Parsing
• Index Tracking Technique
• Algorithm Optimization

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