LeetCode 128 in Java | Longest Consecutive Sequence | Optimal O(n) Approach
9:27
YouTubecodewithamod
LeetCode 128 in Java | Longest Consecutive Sequence | Optimal O(n) Approach
In this video, we solve LeetCode 128: Longest Consecutive Sequence using an optimal O(n) approach in Java. We cover the logic behind using a HashSet to efficiently detect sequence starts and count consecutive numbers without sorting. What you will learn: How to approach array sequence problems Why HashSet gives an O(n) time complexity Clean and ...
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