Delivery Cost Tracker
The delivery cost tracker is the Rippling coding question candidates have described most since 2025. It shows up in phone screens and onsites, from SDE-1 to Staff. The setup is small. Drivers have an hourly rate, deliveries have a start and an end time, and an accounting dashboard wants the total cost.
After that, the interviewer adds parts one at a time, each building on the same model of drivers and deliveries, with times in whole seconds. Each part below is its own problem with its own tests.
Later parts need a sweep or a binary search over the same data. Through all of it, keep money in integer cents until you return it. A float total can drift by a cent, and the hidden tests catch that.
RipplingPremium lesson · Coding round
The 4 Rippling problems are below.
- A Premium questionCoding · Medium · Signature problem
- A Premium questionCoding · Medium · Frequently asked
- A Premium questionCoding · Medium
+ 1 more in this lesson
Each with hints, the follow-up and a tested solution.
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