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Grokking the Coding Interview Patterns in JavaScript

Solution: Longest Consecutive Sequence

Explore how to solve the longest consecutive sequence problem by applying the Union Find pattern. This lesson helps you understand how to group consecutive elements into connected components, merge them efficiently, and determine the longest consecutive sequence with optimal time and space complexity.

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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, xx and yy, are called consecutive if the difference between them is equal to 11.

Constraints:

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