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Grokking the Coding Interview Patterns

Solution: Longest Consecutive Sequence

Explore the union find pattern to solve the longest consecutive sequence problem. Understand how to represent numbers as connected components, merge consecutive elements, and identify the largest sequence. This approach optimizes time to O(n) and helps improve your graph algorithm skills.

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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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