Solution: Longest Consecutive Sequence
Explore how to solve the longest consecutive sequence problem by implementing the Union Find data structure. Understand how to unify consecutive elements into connected components and efficiently determine the sequence length using dictionaries for parent and size. This lesson helps you apply graph algorithms with linear time complexity to array problems, deepening your problem-solving approach in coding interviews.
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Statement
Given an unsorted array, nums, your task is to return the length of the longest consecutive sequence of elements. The consecutive sequence of elements is such that there are no missing elements in the sequence. The consecutive elements can be present anywhere in the input array.
Note: Two elements, and , are called consecutive if the difference between them is equal to .
Constraints: