Longest consecutive sequence
Given an unsorted array, return the length of the longest run of consecutive integers. Aim for O(n).
Implement
longest_consecutive(nums: list[int]) → intExamples
in
[[100,4,200,1,3,2]]out4What a strong answer looks like
State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
0:00 of about 25 min
solution.py
InputExpectedGot
[[100,4,200,1,3,2]]4not run yetsample