Problem 1 — CICD Pipeline Dependency Ordering CICD Pipeline:- Different environments.- If nothing is in prod theDatamine the order in which we should deploy our resources. Questions:1. What are the inputs? [A,B] where A and B are resources. A depends on B – list of lists where each inner list is a dependency pair and…

This Microsoft interview problem focuses on weighted random selection. Given cities and their populations, the function should return a city name with probability proportional to its population. A common solution uses a prefix-sum array and binary search to map a random number to the correct weighted interval. The VOprep team has long accompanied candidates through various major…

There are 2 single linked list, one is ascending sorted, the other is descending sorted, write code to merge them together, result in ascending sorted. For example:L1: 1->2->3L2: 6->5->4 Result:1->2->3->4->5->6 Requirements:Time complexity: O(M + N), M is the length of L1, and N is the length of L2Space complexity: O(1) Please write code to solve…

Problem 1 Imagine you’re working on a language which only support Stack, but you need a Queue functionality to fulfill the requirement. Problem 2 Given:const a = 1;const b = ‘1’;What is the result of each of the following statements: a == ba === b!a === !ba + ba + +b These are typical Microsoft…

Recently, Microsoft interview activity has noticeably increased again. One thing that has always been true about Microsoft is that interview content heavily depends on the team — different teams test very different skills. This time, all three of my rounds followed the pattern of resume deep-dive + coding questions, with no system design and no…

Amazon SDE Intern Interview Experience — One Round to Decide Everything Amazon has started sending out OA invitations again recently. Over the past few weeks I helped several friends go through the process — and everything remains much the same as last year: OA format unchanged, interview setup consistent, and question types stable. Although the…

I recently had my on-site with Google and wanted to put together a clean, realistic walkthrough for anyone preparing. On-site write-ups are surprisingly rare, so hopefully this fills the gap. 🛫 Arriving at Google Google arranged the travel and hotel, so I flew in the day before. On interview day I showed up a bit…

Flight Booking (Python) This exercise provides a basic Python HTTP server used to track flight tickets and their prices.Your interviewer will explain the question; the README only contains usage hints.The main libraries include Flask (HTTP server) and psycopg2 (PostgreSQL client). Getting Started To start the database: Then, in another terminal: If psycopg2-binary fails to install,…

Problem 1 — Ticket Reservation API Design Codewriting How do you design the API/backend for a ticket reservation app?Examples include movie tickets or concert tickets.The app should allow users to hold their ticket(s) for 10 minutes before booking. Problem 2 — Third-Party Airline Booking APIs 3-party APIs Suppose we want to design an automated flight-booking…

📌 Problem Statement Imagine you have an RPC server that produces log entries and we’re analyzing it offline.There are two entries for each call: Your task is to efficiently determine if any RPC in the log timed out. You can assume your function receives two arguments: Example Input timeout: Input log: ID Timestamp Event Type…

Problem – Merge Overlapping CI Intervals Atlassian runs many CI pipelines, and we want to generate reports on usage to find cost-optimization patterns. Each CI pipeline starts at time X and ends at time Y. We are given a list of pipeline time windows: [[X₁, Y₁], [X₂, Y₂], …] Objective Find the list of non-overlapping…

Problem – Find Overlapping Pipeline Intervals Find all time intervals during which at least two pipelines are running at the same time. You are given a list of half-open or closed intervals (assume closed here) where each interval[start, end] represents the running time of one pipeline. Return all sub-intervals where the number of running pipelines…

The VOprep team has long accompanied candidates through various major company OAs and VOs, including Meta, 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 these companies, you can check out our customized support plans—from coding interviews to system design,…

Triplet Card Game — AI Strategy Task You can see there is a 4×4 grid of cards, Ace through Nine.Each turn consists of picking up 3 cards which add up to 15 (Aces count as 1);these cards are then replaced from the deck. If you can’t pick up exactly 3 cards that add up to…

Question 1 You are asked to implement parts of a Naive Bayes classification algorithm from scratch, without using any libraries except numpy and math. Naive Bayes classification is based on Bayes’Theorem, predicting the probability that a set of data points belongs to one of several classes. A full Naive Bayes classifier consists of four major steps: You are given:…

Say we have a tournament of some sort. It doesn’t matter what the tournament is for. All we need to know is: Given the results of a tournament and the IDs of two players,we’d like to know which of those two players did better in the overall tournament. Game results are in the format: Example…

Build a tool that, when given our domains and a list of other domains, alerts the user to all the possible typo-squats of our domains present in the list of other domains. Potential kinds of typos: Part 1 Detect typos where a single character from one of our domains has been changed into a different…

Given a list of historic stock prices,write a function that tells when you should have bought and sold to make the most profit. You can only buy and sell once. Example input: Goal:Return the best buy date and best sell date to maximize profit. One pass: track the lowest price so far, and at each…

Imagine you have a Twitter-style social network.Each post can have multiple tags. Your task: Return the top X most frequent tags used by your friends and your friends-of-friends. In other words, starting from a given user: Example (conceptual): If X = 2, output: Use BFS up to depth 2 to collect friends and friends-of-friends.Count tag…

I own a parking garage that provides valet parking service. There are three types of parking spots: Cars also come in three sizes: Rules: You receive a stream of parking events.Each event is either: Your system must assign a valid spot on arrival and free the spot on departure. Example input (conceptual): You need to…