Coding questions

1,899 resources · Page 36 of 80

1. Coding questions · Roblox

   Find maximum follow depth using recursion

   This question evaluates a candidate's competency with recursion, directed graph traversal, cycle detection, and memoization when computing longest-path depths in social-network-style follow graphs.

2. Coding questions · DocuSign

   Find maximum island sum and required indices

   This question evaluates grid-based graph traversal and connected-component aggregation skills, including handling positive and negative cell values, tie-breaking by row-major indices, and computing maximum component sums.

3. Coding questions · Nuro

   Find Maximum Path Sum in N-ary Tree

   This question evaluates understanding of tree traversal and aggregation techniques, including handling of variable-arity nodes, negative values, and path-based dynamic programming on N-ary trees.

4. Coding questions · Palo Alto Networks

   Find Maximum Rectangle in Bar Chart

   This question evaluates algorithmic problem-solving and data structure proficiency in computing the maximum rectangular area within a histogram-like array, focusing on contiguous segment analysis and range-based aggregation.

5. Coding questions · Apple

   Find Maximum Sum of Contiguous Subarray Length k

   This question evaluates skill in array manipulation and computing aggregate metrics over fixed-length intervals, along with understanding of algorithmic complexity and trade-offs between runtime and memory.

6. Coding questions · DoorDash

   Find Maximum Window Sum

   This question evaluates array manipulation, algorithmic efficiency, and familiarity with the sliding-window technique for computing metrics over fixed-length contiguous subarrays.

7. Coding questions · Uber

   Find minimum activations to absorb all balls

   This question evaluates the ability to model Euclidean-distance relations as a static connectivity graph and reason about the minimum number of activations needed to absorb all nodes, testing computational geometry and graph algorithms competency.

8. Coding questions · Meta

   Find minimum and most frequent number efficiently

   Find minimum and most frequent number efficiently 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.

9. Coding questions · Amazon

   Find minimum days to deliver all orders

   This question evaluates algorithm design and combinatorial optimization skills, focusing on scheduling and load-balancing under per-center capacity constraints and frequency-based counting.

10. Coding questions · Upstart

    Find Minimum Path Sum in Integer Triangle

    This question evaluates understanding of dynamic programming and the ability to compute optimal path sums on triangular data structures, assessing algorithmic reasoning and complexity awareness.

11. Coding questions · DoorDash

    Find minimum processing rate

    This interview question evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer for Find minimum processing rate states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

12. Coding questions · Uber

    Find minimum reversals to orient edges away from root

    This question evaluates understanding of directed graphs and rooted trees, the ability to reason about edge orientations and minimal reversals, and competency in traversal techniques and complexity analysis.

13. Coding questions · Akuna Capital

    Find minimum swaps to sort array with duplicates

    This question evaluates array manipulation and permutation-based reasoning for minimizing swap operations, including handling of duplicate values and performance considerations, within the Coding & Algorithms domain for a Data Scientist role.

14. Coding questions · Meta

    Find missing ranges in interval

    This question evaluates a candidate's proficiency in array traversal, interval reasoning, handling edge cases including empty inputs and 32-bit integer boundary conditions, and enforcing time and space complexity constraints.

15. Coding questions · ByteDance

    Find Missing Ranges with Bounds

    This question evaluates understanding of sorted array manipulation, interval arithmetic, detection of maximal missing ranges, and careful handling of boundary and edge cases in integer intervals.

16. Coding questions · Arista

    Find 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.

17. Coding questions · Roblox

    Find most frequent call stack from logs

    This question evaluates a candidate's ability to simulate and maintain a runtime call stack from event logs, parse entry and exit records, and aggregate snapshot frequencies using appropriate data-structure and string-manipulation skills.

18. Coding questions · Amazon

    Find most frequent log user

    This question evaluates frequency-counting and log-parsing skills along with algorithmic reasoning about time and space complexity for identifying the most frequent element in a dataset.

19. Coding questions · Amazon

    Find Most Frequent Values

    This question evaluates proficiency in analyzing element frequency distributions, choosing appropriate data structures, and optimizing top-k selection with attention to time and space complexity.

20. Coding questions · Meta

    Find multi-account buckets and unread rate

    This question evaluates the ability to manipulate relational data and compute aggregate metrics, testing skills in grouping and counting, filtering by timestamps, joining user-account and notification records, and calculating user-level percentages.

21. Coding questions · TikTok

    Find >n/3 elements in sorted array

    This TikTok software-engineer screen asks you to return every value occurring strictly more than n/3 times in a sorted array, in O(log n) time and O(1) space. The solution proves at most two such values can exist, samples the fixed positions n/3 and 2n/3, and confirms each candidate's count with lower_bound/upper_bound binary searches. It tests frequency reasoning on sorted data, combinatorial bounds, and rigorous complexity and edge-case analysis.

22. Coding questions · DoorDash

    Find names similar by one swap

    This question evaluates string manipulation, character-frequency analysis, and algorithmic reasoning to determine near-matches under a single-character-swap constraint.

23. Coding questions · Snapchat

    Find nearest room; extend to two users

    This question evaluates competency in grid-based shortest-path algorithms, graph traversal, reachability analysis, and distance aggregation for multiple sources.

24. Coding questions · Uber

    Find next and closest palindromes

    This question evaluates string-based numeric manipulation and palindrome construction, including edge-case handling (all 9s, single-digit inputs, length changes), candidate generation and magnitude comparison of large numbers as strings, and carry propagation for fixed-length decimal palindromes.