Apple interview questions

Showing 151–177 of 177 results

• Rotate a Matrix In PlaceMedium

  This question evaluates proficiency in in-place matrix and array manipulation, spatial data transformation, and reasoning about time and space complexity.

  AppleMachine Learning EngineerCoding & AlgorithmsTechnical Screen
• Scale Digit-Square Convergence RequestsMedium

  This question evaluates a candidate's competency in designing scalable, low-latency distributed services that combine algorithmic optimization and caching to handle massive request volumes for a numerical convergence operation.

  AppleSoftware EngineerSystem DesignTechnical Screen
• Simulate a Fixed-Capacity Least-Recently-Used Cache over a Stream of OperationsMedium

  A coding question that asks you to implement a fixed-capacity key-value cache with least-recently-used eviction and run it over a stream of get and put operations. It tests precise recency and eviction rules, updates to keys already in the cache, and the design of a data structure with constant-time operations.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Smallest Valid Task Order from Dependency Pairs (Topological Sort)Hard

  Given a number of tasks and dependency pairs, return the lexicographically smallest order that completes every task while respecting all dependencies, or an empty list when a cycle makes that impossible. Tests topological sorting, cycle detection and deterministic tie-breaking on large dependency graphs.

  AppleSoftware EngineerCoding & AlgorithmsOnsite
• Solve 15 common Apple coding questionsMedium

  This set evaluates algorithmic problem-solving and data-structure competence, including mastery of hash tables, linked lists, stacks, queues, heaps, graphs, sliding-window and two-pointer techniques, complexity analysis, and in-place transformations.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve 15 common interview problemsMedium

  This collection evaluates algorithmic problem-solving skills, mastery of fundamental data structures (arrays, strings, hash maps, stacks, queues, trees, graphs, linked lists) and the ability to reason about time and space complexity.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve Digit-Square and Grid BFS ProblemsMedium

  This question evaluates understanding of digit-based state convergence and cycle detection alongside graph traversal and constrained shortest-path search, testing skills in number manipulation, state-space search, and BFS-style exploration.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve Subset Sum And Return All Matching SubsetsMedium

  This problem tests your ability to navigate the trade-off between dynamic programming and backtracking to find all unique combinations of elements that sum to a target value.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve interval, grid-fill, and heap tasksMedium

  These combined tasks evaluate algorithmic problem-solving and data-structure design skills, specifically interval aggregation and counting over large timestamp ranges, constructive grid-filling with 4-directional connectivity constraints, and multiset operations supporting efficient retrieval and removal of minima and maxima.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve linked list, grid BFS, and median queriesMedium

  This problem tests your ability to manipulate linked list pointers in-place, perform a multi-source Breadth-First Search on a grid, and maintain a sorted structure to retrieve medians efficiently.

  AppleSoftware EngineerCoding & AlgorithmsOnsite
• Solve mixed coding tasks from interviewsMedium

  This question evaluates binary tree traversal and leaf detection, calendrical date arithmetic and palindrome checking, discrete-time edge-detection/stateful sequence processing, and implementation of comparison-based sorting; category/domain: Coding & Algorithms. It is commonly asked to assess correctness and edge-case handling (e.g.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Solve stock and banana problemsMedium

  This question evaluates algorithmic problem-solving skills related to array processing, optimization under constraints, and reasoning about performance trade-offs by presenting a maximum single-transaction stock profit problem and a minimum banana-eating speed problem.

  AppleMachine Learning EngineerCoding & AlgorithmsOnsite
• Solve three easy algorithm problemsEasy

  This multi-part prompt evaluates proficiency in fundamental algorithmic concepts including sorted array handling, single-transaction optimization in time-series data, and bracket-sequence validation, measuring understanding of array and string manipulation, common data structures, algorithmic complexity, and edge-case reasoning.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Sort and merge string lists by lengthMedium

  This question evaluates understanding of sorting algorithms, stability, merging strategies, and time/space complexity analysis when ordering strings by length, and is categorized under Coding & Algorithms.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Store Open-Hours Query: Weekdays, Split Shifts and Overnight Windows in JavaEasy

  A progressive Java coding exercise that asks whether a store is open at a given time as its schedule grows from one daily window to selected weekdays, several windows per day, and overnight windows that cross midnight and wrap from Sunday to Monday. It tests time modeling, boundary handling, and keeping evolving code readable.

  AppleSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Time-to-Live Token Manager With Renewal and a Heavy Concurrent Read/Write Follow-upMedium

  Implement a token manager in which each token expires a fixed time-to-live after it is generated or renewed, renewals extend only unexpired tokens, and a query counts live tokens. The follow-up asks how to keep it correct and fast under heavy concurrent reads and writes.

  AppleSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Troubleshoot a Failing Kubernetes Pod: Where to Start and What to CheckMedium

  Explain how to troubleshoot a Kubernetes pod that has a problem, starting from its status, container states and events. Tests mapping Pending, ImagePullBackOff, CrashLoopBackOff, OOMKilled and not-Ready states to likely causes, using logs, debug containers and node checks, and separating mitigation from root cause.

  AppleSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Unit Ratio Queries Across Independent Unit Families with Modular AnswersMedium

  A graph coding problem: given multiplicative conversion factors between units that split into independent families, answer queries for how many units of one unit equal one unit of another, returning the ratio modulo a prime or -1 when the units cannot be converted. It tests graph traversal over a forest and modular arithmetic.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen
• Validate and Assess Performance BenchmarksMedium

  Assess QA benchmark validity using comparable baselines, measurement variation, practical impact, and clear ownership of regression thresholds and known issues.

  AppleSoftware EngineerSoftware Engineering FundamentalsOnsite
• Vertical Order Traversal of a Binary TreeMedium

  This problem tests your ability to map tree nodes to a 2D coordinate system and group them based on their horizontal distance from the root, followed by specific sorting criteria.

  AppleSoftware EngineerCoding & AlgorithmsOnsite
• Walk Through Your Hardest Debugging InvestigationMedium

  This question assesses your systematic problem-solving process, technical depth, and ability to learn from high-pressure production incidents.

  AppleSoftware EngineerBehavioral & LeadershipOnsite
• Walk Through an Agentic PDF Evaluation CodebaseHard

  This question tests your ability to navigate, critique, and extend a modular codebase designed for evaluating agentic PDF processing pipelines, focusing on evaluation metrics and robust system architecture.

  AppleMachine Learning EngineerSoftware Engineering FundamentalsTechnical Screen
• Work Productively with Someone Who DisagreesMedium

  This question assesses a candidate's ability to navigate professional conflict by prioritizing team objectives over personal ego and maintaining effective working relationships.

  AppleSoftware EngineerBehavioral & LeadershipOnsite
• Write a Usage Example for a Resource-Owning C++ Class and Explain Its SemanticsEasy

  A C++ internship screen exercise: read an unfamiliar class that owns a heap array and write an example program showing callers how to use it correctly. It tests code comprehension and C++ fundamentals such as RAII, deleted copy operations, move semantics, noexcept, explicit constructors and const-correctness.

  AppleSoftware EngineerSoftware Engineering FundamentalsTechnical Screen
• Write a generator for substring pattern matchesMedium

  This question evaluates understanding of string pattern matching and generator/iterator design, testing skills in handling overlapping matches, streaming output, and worst-case time complexity considerations.

  AppleMachine Learning EngineerCoding & AlgorithmsTechnical Screen
• Write queries to compute salary and budget statsEasy

  This set of tasks evaluates data manipulation and analytical competencies, specifically the ability to compute order-statistics on numeric columns, perform relational joins to enrich event records, and reason about constrained selection for maximizing hires using SQL and pandas.

  AppleData ScientistData Manipulation (SQL/Python)Onsite
• Zero out duplicates and sort an arrayMedium

  This question evaluates proficiency in array manipulation, duplicate handling, and custom sorting logic with attention to time and space complexity, and it falls within the Coding & Algorithms domain.

  AppleSoftware EngineerCoding & AlgorithmsTechnical Screen