I was asked to write code that parses a stack trace log and uses a stack to count call occurrences. I also needed to parse call and return statements. The coding problem was: You’re given a sequence of logs representing function **entries** and **exits** in a...
Showing 11-20 of 32 forum items
I had an onsite interview at Roblox. The coding questions can be found in this platform. There were two follow-up questions, making a total of three coding questions. I was a bit rushed on the third question, but the interviewer was nice and let me finish and...
In my phone screen, I was given 45 minutes to solve a rate limiter problem. I only managed to complete the first part and explain the approach for the follow-up due to time constraints. I didn't pass all the hidden test cases for the first part. I realized lat...
Here is the coding question: An online gaming platform needs to automate its content moderation process. You are tasked with developing a system that generates email notifications by summarizing detected rule violations. Given a list of flagged keywords, you n...
I asked with the following question: You are building a rate limiter for a backend system. Incoming requests arrive at times specified by the array timestamps. Your task is to determine, for each request, whether it should be allowed or rejected based on the f...
The System Design question involved designing a 'like' system for the Roblox Marketplace, similar to Instagram's like feature. The focus was on optimizing for popular items. I felt my answer was not strong. The coding question was: Given a list of integers, a...
This was the most challenging online assessment I've ever taken. It consisted of four tasks: **Task 1 (Problem-Solving Assessment, 25 minutes):** Repairing toy cars to pass various courses and building as many passable cars as possible. **Task 2 (Problem-Solvi...
I interviewed for a Backend SWE position. The interview question felt like a variation of a LeetCode problem, but not a direct match. The problem description was quite lengthy. The question was: Given an array of function calls, return the most frequent call s...
### Question 1 I was given a sorted array `requestTimestamps`. Each timestamp represents a request. `windowLength` represents the length of the window time, and `maxNumber` represents the maximum number of requests the window can accommodate. If the number of...
I had a phone screen that consisted of 45 minutes of coding and 15 minutes of ML fundamentals. The coding question was a Candy Crush solver. **Part 1:** Given a grid with integers, if there are 3 or more horizontally or vertically adjacent matching integers, o...
