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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
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- 11
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Showing 3271–3276 of 3276 results
- xAIHardSoftware EngineerMaximize distinct values after unique ± offsets
This problem tests greedy strategy and sorting to determine the maximum possible count of distinct values in an array after applying exactly one offset from a given set of allowed integers to each element.
Coding & AlgorithmsTechnical ScreenGreedySortingCombinatorics - xAIMediumSoftware EngineerMinimum Time to Run All Jobs with a Cooldown Between Identical Jobs
This question evaluates understanding of scheduling constraints, frequency analysis, and time-complexity reasoning required to minimize total execution time under per-type cooldown restrictions.
Coding & AlgorithmsOnsite - xAIEasySoftware EngineerPhone Keypad Predictive Text Suggestions
This question evaluates understanding of string-to-digit encoding, prefix-based retrieval, and efficient preprocessing for fast query-time lookup in large dictionaries.
Coding & AlgorithmsOnsite - xAIMediumSoftware EngineerSort a Large Array Using Multiple Threads
This question evaluates understanding of concurrent programming, parallel algorithm design, sorting algorithms, and merging techniques under multi-threaded execution, focusing on thread-safety, deterministic correctness despite scheduling variability, and performance trade-offs.
Coding & AlgorithmsOnsite - xAIMediumSoftware EngineerVersioned Key-Value Store with Nested Transactions (Begin, Commit, Rollback)
This question evaluates understanding of transactional state management, nested transactions, visibility semantics for set/delete operations, and efficient in-memory data-structure manipulation.
Coding & AlgorithmsOnsite - xAIMediumSoftware EngineerWeighted LRU Cache: Capacity Counted by Item Quantity
This question evaluates understanding of cache design and LRU eviction semantics with weighted resource accounting, plus data-structure and amortized-complexity reasoning needed to support O(1) average-time operations.
Coding & AlgorithmsOnsite
xAI