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Software Engineer 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.
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Showing 2251–2280 of 5874 results
- GoogleMediumSoftware EngineerCompute Entity Size and Validate a Hierarchical File System
Implement methods to compute the recursive byte size of an entity in a hierarchical file system and validate the structural integrity of the file system graph.
Software Engineering FundamentalsOnsiteGraphTreeDFS/BFS - GoogleHardSoftware EngineerCompute Turnstile Crossing Times
This problem tests your ability to manage state in a queue-based simulation and implement complex tie-breaking logic using data structures like heaps or prioritized queues.
Coding & AlgorithmsTechnical ScreenSimulationQueueHeap - GoogleMediumSoftware EngineerCompute a Depth-Weighted Sum of a Nested List
Implement and compare recursive and iterative traversals to compute the depth-weighted sum of an arbitrarily nested list of integers, handling deep nesting and edge cases.
Coding & AlgorithmsOnsitedfsbfsstack - GoogleMediumSoftware EngineerCompute distance to nearest taxi in grid
This problem tests your ability to efficiently compute shortest path distances from multiple sources to all reachable grid cells using multi-source Breadth-First Search (BFS).
Coding & AlgorithmsTechnical ScreenBFSGraphGrid - GoogleEasySoftware EngineerCompute max coins with 3-step token moves
This question evaluates combinatorial optimization, state-space reasoning, and algorithmic design for constrained token movements on a linear board, and falls under the Coding & Algorithms domain.
Coding & AlgorithmsOnline Assessment - GoogleHardSoftware EngineerCompute minimax grid path and network delay
This question tests the ability to solve pathfinding problems using non-standard cost metrics: first, finding a minimax path in a grid, and second, calculating the earliest arrival time in a network with weighted edges.
Coding & AlgorithmsTechnical ScreenDynamic ProgrammingDijkstraBinary Search - GoogleMediumSoftware EngineerCompute minimum servers for cyclic tasks
This problem tests your ability to manage overlapping intervals in a circular domain by converting cyclic tasks into linear sub-intervals and applying a sweep-line or greedy approach to determine resource requirements.
Coding & AlgorithmsTechnical ScreenIntervalsGreedySweep-line - GoogleMediumSoftware EngineerCompute servers needed for daily recurring jobs
This question evaluates understanding of interval-based resource allocation and job grouping by identifier, testing competency in managing overlapping time intervals, capacity planning, and handling day-boundary truncation.
Coding & AlgorithmsTechnical Screen - GoogleMediumSoftware EngineerCompute shortest delivery route with dangerous stops
This question evaluates understanding of graph traversal and shortest-path techniques under constraints, including avoidance of forbidden nodes, multi-criteria optimization (minimizing dangerous-node visits then steps), and reasoning about augmented state and visited-structure design.
Coding & AlgorithmsOnsite - GoogleMediumSoftware EngineerCompute shortest paths with blocked nodes
This question evaluates proficiency with graph algorithms, shortest-path and reachability concepts when nodes are removed or blocked, and the ability to analyze time and space complexity across directed and undirected graphs.
Coding & AlgorithmsTechnical Screen - GoogleMediumSoftware EngineerCompute sliding-window average excluding top k
This problem tests your ability to maintain order statistics in a sliding window using balanced data structures or heaps to perform efficient removals and updates while excluding the top k elements.
Coding & AlgorithmsTechnical ScreenSliding WindowOrder StatisticsData Structures - GoogleMediumSoftware EngineerCompute the Union of Two Sorted Interval Lists
Merge two sorted lists of disjoint closed intervals into a single sorted list of disjoint intervals in linear time.
Coding & AlgorithmsOnsiteIntervalsTwo PointersMerge Sort - GoogleMediumSoftware EngineerConsolidate On-Call Rotation Segments
Consolidate overlapping on-call shift intervals into non-overlapping segments, each annotated with the sorted list of active engineers.
Coding & AlgorithmsOnline Assessmentintervalsweep-linesorting - GoogleMediumSoftware EngineerCount Clusters of 2D Points Within a Radius
This problem tests your ability to model geometric data as a graph and identify connected components using traversal algorithms or Disjoint Set Union (DSU).
Coding & AlgorithmsTechnical ScreenGraphsGeometryDFS/BFS - GoogleMediumSoftware EngineerCount Connected Clusters of Two-Dimensional Points
Tests modeling geometric proximity as a graph problem, using Disjoint Set Union or graph traversal to identify connected components while ensuring exact integer arithmetic and handling duplicate coordinates.
Coding & AlgorithmsTechnical Screengraphsunion-findgeometry - GoogleMediumSoftware EngineerCount Prefix-Matching Simple Paths in a Labeled Graph
Tests graph traversal, bitmask dynamic programming or backtracking with pruning, and prefix counting on small labeled graphs.
Coding & AlgorithmsTechnical Screengraphbitmask-dpbacktracking - GoogleEasySoftware EngineerCount Rectangle Coverage on a Grid
Implement an algorithm to compute cell-by-cell coverage counts for an n x n grid given multiple inclusive rectangular regions.
Coding & AlgorithmsOnsitematrixprefix-sumdifference-array - GoogleMediumSoftware EngineerCount Up-Right/Right/Down-Right Grid Paths Through Ordered Checkpoints
Count the paths across an n by m grid from the bottom-left to the bottom-right cell when each move goes up-right, right or down-right, optionally passing through checkpoints in a required order, modulo a large prime. It tests column-by-column dynamic programming and reducing memory use.
Coding & AlgorithmsOnsite - GoogleMediumSoftware EngineerCount user sessions from logs
This question evaluates a candidate's ability to parse and process large-scale event logs, perform sessionization based on time gaps, handle out-of-order records and memory constraints, and reason about time and space complexity and optimization strategies in the Coding & Algorithms domain.
Coding & AlgorithmsOnsite - GoogleMediumSoftware EngineerDecide string transform with directional tokens and walls
Decide string transform with directional tokens and walls 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 - GoogleMediumSoftware EngineerDecompress encoded string with nested repeats
This question tests the ability to handle nested structures using recursion or a stack-based approach to expand string patterns based on repetition factors.
Coding & AlgorithmsOnsiteStackRecursionString Manipulation - GoogleMediumSoftware EngineerDeduplicate and Order Batch and Streaming Logs
Design both a batch algorithm and a streaming processor to deduplicate and chronologically order log records under different resolution policies, accounting for out-of-order delivery, late data, and bounded memory.
Software Engineering FundamentalsOnsiteStreamingDeduplicationData Structures - GoogleHardSoftware EngineerDefend the Trade-Offs in One Project
This question assesses a candidate's ability to articulate the engineering rationale behind technical decisions, balancing trade-offs against project constraints and evolving requirements.
Behavioral & LeadershipTechnical ScreenBehavioralSystem DesignEngineering Leadership - GoogleMediumSoftware EngineerDependency-Safe Deletion Order
Tests directed graph modeling, cycle detection, and Kahn's algorithm using a min-heap to produce a lexicographically smallest topological sort.
Coding & AlgorithmsOnsiteTopological SortHeapGraph - GoogleMediumSoftware EngineerDescribe Key Behavioral Examples
This question evaluates interpersonal and leadership competencies—including communication, conflict resolution, teamwork, accountability, problem-solving, and adaptability—by eliciting concrete behavioral examples from past internships or projects.
Behavioral & LeadershipTechnical Screen - GoogleMediumSoftware EngineerDescribe a Failure and the Change It Prompted
This behavioral interview question evaluates a candidate's self-awareness, accountability, and capacity to convert a significant technical or project setback into enduring operational or personal improvements.
Behavioral & LeadershipOnsiteBehavioralLeadershipPost-Mortem - GoogleMediumSoftware EngineerDescribe a challenging recent project
This question evaluates leadership, communication, problem‑solving, technical ownership, and the ability to describe trade‑offs, diagnostics, measurable impact, and lessons learned within a software engineering project.
Behavioral & LeadershipOnsite - GoogleMediumSoftware EngineerDescribe a conflict with a colleague
This question evaluates a candidate's interpersonal conflict-resolution, communication, and leadership competencies within software engineering teams, including stakeholder management and accountability.
Behavioral & LeadershipOnsite - GoogleMediumSoftware EngineerDescribe a major challenge you faced
This question evaluates a candidate's behavioral and leadership competencies, including problem-solving, resilience, ownership, communication, and teamwork within academic, internship, or professional technical projects.
Behavioral & LeadershipOnsite - GoogleEasySoftware EngineerDescribe conflict resolution and stakeholder management
This question evaluates a candidate's conflict-resolution and stakeholder-management competencies, including mediation, expectation management, and clear communication when navigating disagreements among peers, managers, and cross-functional partners.
Behavioral & LeadershipOnsite
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