CodingMediumcod-g1294

Subject Prefix sumLevel Entry–Mid~16 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

Given a list of integers (positive, zero, or negative) and a target k, return the length of the longest contiguous run of elements whose sum is exactly k. Return 0 if no such run exists. Runs must be non-empty. Example: nums = [1, -1, 5, -2, 3], k = 3 gives 4, because 1 + (-1) + 5 + (-2) = 3 is the longest qualifying run.

Implement

longest_run_with_sum(nums: list[int], k: int) → int

Examples

in[[1,-1,5,-2,3],3]out4

What 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.

Learn the concepts

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.