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Atlassian Interview Question: Merge Overlapping CI Intervals (Merge Intervals Problem)

Atlassian Atlassian Interview Question: Merge Overlapping CI Intervals (Merge Intervals Problem)

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…

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Atlassian 2025-11-25
Atlassian Interview Question: Find Overlapping Pipeline Intervals (Interval Overlap Problem)

Atlassian Atlassian Interview Question: Find Overlapping Pipeline Intervals (Interval Overlap Problem)

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…

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Atlassian 2025-11-25
Atlassian System Design Interview | Snake Game OOD / Implement Move Logic & Game Over Detection

Atlassian Atlassian System Design Interview | Snake Game OOD / Implement Move Logic & Game Over Detection

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,…

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Atlassian 2025-11-25
Meta (Facebook) AI-Enabled Interview Question — Triplet Card Game Strategy & Illegal Move Detection

Meta Meta (Facebook) AI-Enabled Interview Question — Triplet Card Game Strategy & Illegal Move Detection

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…

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Meta 2025-11-24
Pinterest OA – Implement Naive Bayes Classifier (Machine Learning Coding Assessment)

OA Pinterest OA – Implement Naive Bayes Classifier (Machine Learning Coding Assessment)

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:…

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OA 2025-11-21
Block Interview Question: Determine Which Player Performed Better in a Tournament (Game Results Evaluation)

Block Block Interview Question: Determine Which Player Performed Better in a Tournament (Game Results Evaluation)

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…

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Block 2025-11-18
Block (Square) Interview Question – Typo-Squatting Detection System Design

Block Block (Square) Interview Question – Typo-Squatting Detection System Design

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…

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Block 2025-11-18
Amazon Interview Question: Best Time to Buy and Sell Stock (Single Transaction | Max Profit)

Amazon Amazon Interview Question: Best Time to Buy and Sell Stock (Single Transaction | Max Profit)

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…

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Amazon 2025-11-17
Amazon Interview Question: Find Top X Most Frequent Tags from Friends and Friends-of-Friends (Graph + Frequency Counting)

Amazon Amazon Interview Question: Find Top X Most Frequent Tags from Friends and Friends-of-Friends (Graph + Frequency Counting)

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…

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Amazon 2025-11-17
Amazon Interview Question: Design a Parking Garage with Valet Service (Parking System | OOD)

Amazon Amazon Interview Question: Design a Parking Garage with Valet Service (Parking System | OOD)

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…

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Amazon 2025-11-17
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