A comma-separated expression inside curly braces expands to a list of words.If there is a prefix before the { or a suffix after the }, they also appear in each expansion. Examples: Write a brace_expand function that takes a single pattern string and returns a list of expanded strings.If the pattern is not expandable, return…

Sending Subscription Notifications — Part 1 At Stripe, we frequently send notifications to users related to their subscriptions.Each user has an account creation date and a subscription plan with a specific duration.You’ll need to generate email subject lines corresponding to each user for different stages of their subscription, sorted by time. Your notification system will…

Part 1: Register Receivables Part 2: Contracts and Updates The VOprep team has long accompanied candidates through various major company OAs and VOs, including Stripe, Google, Amazon, Citadel, SIG, providing real-time voice assistance, remote practice, and interview pacing reminders to help you stay smooth during critical moments. If you are preparing for Stripe or similar…

Friendly reminder: If you haven’t read the previous article “Shipping Cost Calculation,” it is recommended to read it first, as this question is actually a continuation of the logic from that article. Link to the previous article 🧾 Problem Description Modify your program such that it can find shipping routes through at most one intermediate…

Part 1 — Authorization Requests Stripe accepts payments on behalf of merchants. These payments begin as Authorization Requests, which represent an intent to transfer funds from an end user’s credit card to a merchant. Our system receives these requests and decides the Outcome of each Authorization Request. For now, the system’s policy is to APPROVE…

Problem Description Imagine an online hardware store that sells products of different sizes.The store could sell small items like a mouse or larger items like a laptop.These items cost a different amount to be shipped out.Shipping to different countries can also cost a different amount. Imagine you have an order object that looks like the…