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Grokking the Coding Interview Patterns

Longest Consecutive Sequence

Explore how to solve the longest consecutive sequence problem by applying the union-find algorithm. This lesson helps you understand the approach to identify consecutive elements in an unsorted array and implement an efficient solution suitable for 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, xx and yy ...