Apple interview questions

Design Image Augmentation Function

Write a function performing image augmentations. This question focuses on object-oriented programming, requiring you to handle input, validate it, and perform transformations…

Companies: Apple

Last reported Jun 2025

Maximum Area of Longest Diagonal Rectangle

Given a list of rectangles (length, width), find the rectangle with the largest diagonal (compare l^2 + w^2 to avoid sqrt) and return its area…

Companies: Apple

Last reported Jun 2025

Design a Social Media Feed Generation System

Design a social media feed system that generates and populates personalized feeds for users on platforms like Twitter, Instagram, or Facebook.

Companies: Apple, Amazon, Atlassian, Bloomberg +5

Last reported May 2025

Design Data Model for Building Management System

Design a building management system that tracks employee locations and activities in real-time. The system should provide the current number of employees in the building…

Companies: Apple, Thrive Global

Last reported Apr 2025

Flatten Deeply Nested Array

Flatten a nested array up to a given depth n: return a new array where only subarrays whose nesting depth is less than n (top-level…

Companies: Apple, Meta

Last reported Apr 2025

Tell me about a project where the requirements were not clear or kept changing. How did you adapt and maintain productivity?

Companies: Apple, Amazon, Bloomberg, DoorDash +11

Last reported Apr 2025

Tell me about a time you had a conflict with a coworker. How did you resolve it?

Companies: Apple, Adyen, Airbnb, Amazon +31

Last reported Apr 2025

Design a ticket booking system like Ticketmaster

Contention on scarce inventory: seat holds with TTL, locking/optimistic concurrency, payments, flash-sale traffic and virtual queues.

Companies: Apple, Agoda, Airwallex, Amazon +15

concurrency · idempotency · load-shedding · locking

Last reported Mar 2025

Design a Text-Based Search System

Design a text-based search system that can crawl web content, store data efficiently, and return relevant search results to users.

Companies: Apple

Last reported Mar 2025

Design Phone Directory

Design a data structure that manages a fixed pool of phone numbers (0..maxNumbers-1) supporting get (assign and return an available number), check (report if a…

Companies: Apple

Last reported Feb 2025

Minimum Number of Days to Make m Bouquets

Find the minimum day such that you can form at least m bouquets, each requiring k adjacent flowers that have bloomed (return -1 if impossible…

Companies: Apple, Amazon, Flipkart, Meta

Array · Binary Search

Last reported Feb 2025

Walking Robot Simulation

Simulate a robot on an infinite grid executing turn commands and unit-step moves, stopping any step that would hit an obstacle and updating its facing…

Companies: Apple, Meta, Shopify

Array · Hash Table · Simulation

Last reported Jan 2025

Sort the Students by Their Kth Score

Given an m×n matrix where each row is a student's exam scores, reorder the rows by the k-th column in descending order and return the…

Companies: Apple

Last reported Dec 2024

Build a React Web Page to Display GDP Data

Create a web application using React to fetch and display GDP data from a public API. The application should allow users to view GDP data…

Companies: Apple

Last reported Sep 2024

Calculate Trapping Rain Water

Given an array of non-negative heights representing elevation bars, compute the total amount of water that can be trapped after rainfall. The core challenge is…

Companies: Apple, Goldman Sachs

Last reported Sep 2024

Count Houses in a Circular Street

Given a circular street represented by an array of houses, count how many houses satisfy a local property that depends on their neighbors (e.g., empty/available…

Companies: Apple

Last reported Sep 2024

Department Highest Salary

Find employees with the highest salary in each department by grouping employees by department, computing the max salary per group, and selecting all employees whose…

Companies: Apple

Last reported Sep 2024

Design A Payment System Without Internet

Design a payment system that enables secure transactions without internet connectivity, using distributed authority mechanisms to avoid reliance on a single source of truth.

Companies: Apple

Last reported Sep 2024

Design Asset Price Management System

Design a system that manages asset prices and automatically propagates price changes to related assets through predefined dependency relationships modeled as a DAG.

Companies: Apple, Bloomberg

Last reported Sep 2024

Design Online Block Diagram Maker

Design an online block diagram maker that allows users to create and edit diagrams collaboratively with real-time updates and supports infinite canvas functionality.

Companies: Apple

Last reported Sep 2024

Design Snake Game

Simulate a Snake game on an m×n grid supporting move(direction): the snake advances, grows when it eats sequentially placed food (increasing score), and the game…

Companies: Apple, Atlassian, Bloomberg, Meta +1

Last reported Sep 2024

Maximum Depth of N-ary Tree

Given the root of an n-ary tree, return its maximum depth — the number of nodes along the longest root-to-leaf path. This is a simple…

Companies: Apple, Merge

Last reported Sep 2024