CodingEasycod-g1304

Subject Prefix sumLevel Entry–Mid~10 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

A project budget starts at zero. Each month contributes a signed net amount: income minus spending. Given the list of monthly net amounts in order, return how many months end with the cumulative balance strictly below zero. Example: nets = [100, -250, 80, 90] gives 2 — the running balances are 100, -150, -70, 20, and two of them are negative.

Implement

months_in_deficit(nets: list[int]) → int

Examples

in[[100,-250,80,90]]out2

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.