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Coding & Algorithms Interview Questions
Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.
- 9403
- Questions
- 546
- Companies
- 11
- Topics
- 8
- Languages
Showing 241–270 of 1706 results
- Applied IntuitionHardSoftware EngineerMerge Overlapping Straight Fence Runs From a Property Survey
Collapse a pile of straight fence-line survey readings into one run per physically continuous stretch of fence, by detecting which readings sit on the same infinite line and connect up. Tests exact collinearity detection, correct handling of every orientation, and interval merging per line.
Coding & AlgorithmsTechnical Screengeometryunion-findsorting - Applied IntuitionMediumSoftware EngineerMerge collinear overlapping 2D segments
This problem tests your ability to handle geometric data by identifying and merging overlapping segments that lie on the same infinite line.
Coding & AlgorithmsTechnical ScreenGeometryIntervalsSorting - Applied IntuitionMediumSoftware EngineerMerge overlapping 2D line segments
This problem tests your ability to handle geometric data by sorting and merging 1D intervals that exist within a 2D space, specifically focusing on collinear segments.
Coding & AlgorithmsTechnical ScreenGeometrySortingIntervals - Applied IntuitionMediumSoftware EngineerMulti-Agent Collision Simulator (Unicycle Kinematics)
Implement a discrete-time multi-agent simulator using unicycle kinematics and forward Euler integration to track agent trajectories and detect inter-agent collisions.
Coding & AlgorithmsTechnical ScreenRoboticsSimulationGeometry - Applied IntuitionMediumSoftware EngineerParse a protobuf-like schema and answer queries
This problem tests your ability to parse a hierarchical schema definition, resolve nested type references using a symbol table, and implement an efficient lookup function for type paths.
Coding & AlgorithmsTechnical ScreenParsingTrieHash Table - Applied IntuitionHardBackend EngineerResolve Dependent Addition Equations
Implement an equation evaluator that computes the integer values of variables defined in terms of literals and other variables while detecting cycles and undefined references.
Coding & AlgorithmsTechnical ScreenGraphTopological SortDFS - Applied IntuitionMediumSoftware EngineerScale Game of Life to huge matrices
This question tests the ability to optimize grid-based simulations that exceed local memory capacity, focusing on sliding windows, buffer management, and efficient disk I/O.
Coding & AlgorithmsTechnical ScreenAlgorithmsSystem-DesignI/O-Optimization - Applied IntuitionHardSoftware EngineerTrack simulations and report timeouts
This question evaluates competency in algorithms and data-structure design for real-time stream processing, including maintaining per-simulation state, handling time-based expirations, and reasoning about performance and correctness.
Coding & AlgorithmsTechnical Screen - Applied IntuitionMediumSoftware EngineerValidate JSON against a protobuf-like schema
This problem tests your ability to recursively validate a JSON object against a structured schema definition and handle field presence constraints.
Coding & AlgorithmsTechnical ScreenRecursionJSONValidation - Applied IntuitionHardMachine Learning EngineerValidate Nested Configuration Objects
This question evaluates schema validation skills including recursive data structures, primitive and composite type checking, and structured error reporting for configuration objects, categorized under Coding & Algorithms for a Machine Learning Engineer role and focused on practical implementation.
Coding & AlgorithmsTechnical Screen - ApplovinHardSoftware EngineerCount invalid nodes in a BST
This question evaluates understanding of binary search tree invariants and the ability to identify nodes that violate ancestor-imposed value ranges, testing competency with tree data structures and constraint propagation in the coding & algorithms domain.
Coding & AlgorithmsTechnical Screen - AristaEasySoftware EngineerFind missing value in sorted consecutive array
This question evaluates understanding of array properties and algorithmic complexity, specifically detecting a single missing element in a sorted consecutive sequence within the Coding & Algorithms category.
Coding & AlgorithmsTechnical Screen - AristaEasySoftware EngineerRemove Target Values from a Linked List
This question evaluates proficiency with singly linked list manipulation, specifically in-place node removal and correct pointer/reference management. It is commonly asked to assess practical coding ability with data structures, handling of edge cases and resource implications; category: Coding & Algorithms (Data Structures), level of abstraction: practical implementation-focused.
Coding & AlgorithmsTechnical Screen - AristaEasySoftware EngineerSolve palindrome and missing-number variants
This question evaluates competencies in string processing, array manipulation, binary search, and algorithmic complexity analysis by asking a palindrome check and a missing-number problem that requires both O(n) and O(log n) reasoning, emphasizing edge-case handling and time/space complexity discussion.
Coding & AlgorithmsTechnical Screen - ArmadaMediumSoftware EngineerFetch paginated data from two APIs
This question evaluates a candidate's competency in robust API retrieval, pagination handling, defensive data validation, and joining records across endpoints while preserving the order of source records and safely handling missing or malformed fields.
Coding & AlgorithmsTechnical Screen - Art AdvisorsMediumSoftware EngineerSolve common array/graph interview problems
This problem tests your ability to manipulate matrices for grid traversal, apply BFS for shortest-path discovery in string transformations, and optimize sorting or counting logic for metric calculations.
Coding & AlgorithmsTechnical ScreenGraphBFSSorting - AsanaMediumSoftware EngineerFind the K Closest Points to the Origin
This problem tests proficiency with heap-based priority queues and custom sorting logic for spatial coordinates.
Coding & AlgorithmsTechnical ScreenSortingHeapGeometry - AsanaMediumSoftware EngineerSolve a Jigsaw Puzzle
This question evaluates algorithmic problem-solving, constraint satisfaction, search and pruning strategies, and handling combinatorial state such as piece rotation and placement.
Coding & AlgorithmsTechnical Screen - Assort HealthMediumSoftware EngineerBuild Lab and Consultation Appointment Matches
Process raw 10-minute provider availability records into 30-minute appointment options and match consecutive lab and consultation appointments within a 60-minute wait window.
Coding & AlgorithmsTechnical ScreenIntervalsSortingTwo Pointers - AtlassianMediumSoftware EngineerDesign a trie-based URL router with wildcards
Design a trie-based URL router with wildcards evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.
Coding & AlgorithmsTechnical Screen - AtlassianMediumSoftware EngineerDetermine whether a word exists in a letter grid
Implement a backtracking search to determine if a target word can be formed by sequentially adjacent cells in a 2D character grid without reusing any cell.
Coding & AlgorithmsTechnical Screenbacktrackingdfsmatrix - AtlassianEasySoftware EngineerFilter Invalid Data Events
Tests your ability to implement a multi-condition event filtering and deduplication pipeline while preserving input order, along with complexity analysis for batch and stream processing.
Coding & AlgorithmsTechnical Screenhash-tabledata-processingarrays - AtlassianMediumSoftware EngineerFind nearest common manager for multiple employees
This question evaluates proficiency in tree and graph algorithms (lowest common ancestor), input validation for hierarchical data (cycle and disconnected component detection), API design for constructing and querying trees, and algorithmic time/space complexity analysis.
Coding & AlgorithmsTechnical Screen - AtlassianMediumSoftware EngineerFind smallest common organization for employees
This problem tests your ability to navigate hierarchical structures and find the Lowest Common Ancestor (LCA) in a tree or a directed acyclic graph representing organizational reporting lines.
Coding & AlgorithmsTechnical ScreenTreeLCADFS - AtlassianMediumSoftware EngineerHighlight the Shortest Unique Substring in Each Label
Find and highlight the shortest case-insensitive unique substring in each label using bracket notation, breaking ties by earliest index and preserving original casing.
Coding & AlgorithmsTechnical Screenstringshash-tabletrie - AtlassianMediumData ScientistImplement Real-Time Rate Limiting for Web Service Requests
This question evaluates understanding of real-time rate limiting, time-windowed traffic control, and efficient per-client state management under algorithmic constraints.
Coding & AlgorithmsTechnical Screen - AtlassianMediumSoftware EngineerImplement sequential and parallel URL requests
Implement an asynchronous batch URL fetcher that executes requests with bounded concurrency, deduplicates network calls, preserves input order, and handles per-request errors gracefully.
Coding & AlgorithmsTechnical Screenconcurrencyasync-awaitnetworking - AtlassianMediumSoftware EngineerImplement sliding-window rate limiter function
This problem tests your ability to design a thread-safe rate limiter using a sliding window approach, focusing on time complexity optimization and memory management.
Coding & AlgorithmsTechnical ScreenConcurrencyData StructuresSliding Window - AtlassianMediumSoftware EngineerMerge intervals and design rating APIs
Tests interval merging logic alongside stateful data structure design for tracking agent performance, calculating streaming averages, and ranking agents with deterministic tie-breaking.
Coding & AlgorithmsTechnical Screenintervalsheaphash-table - AtlassianMediumSoftware EngineerMerge overlapping intervals
This problem tests your ability to manipulate array-based data structures, specifically focusing on sorting and linear-time interval merging logic.
Coding & AlgorithmsTechnical ScreenArraysSortingGreedy
Applied Intuition
Arista
Asana
Atlassian