Doordash Tech Interview 完整原题

最近面了DD Tech round, 感觉DD题库就那么两道题, 和地里的一模一样。给大家share下完整的原题。

另外说一点, DD HR会故意downlevel candidate, 并且不会主动说你面的role的level。我是在onsite prep call里面追问才知道被downlevel了, 并且还特别嘴硬说他们的junior level就是大厂的senior。<@_@>

找工作不容易, 希望大家多给加点米，谢谢~

------------------------------Product--------------------------
DoorDash wants to reduce the cost impact of customers receiving cold food, including customer-support costs, credits, and refunds. How should we approach this problem?

- Define metrics
- The primary metric stayed flat for weeks 1–4 but increased during weeks 5–8. How would you investigate?
- Suppos

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month as a % for every month in 2021 (you can ignore January)?
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