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ALEX - Alternative Experts Interview Questions

The questions to prepare for ALEX - Alternative Experts interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 6 questions · ~67 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsALEX - Alternative Experts
LRU Cache for Fast RetrievalMedium
Practice

Implement an LRU cache using a hash map and doubly linked list to support O(1) get and put operations.

Hash TablesSearchingSortingALEX - Alternative Experts
Breadth-First SearchEasy
Practice

Implement BFS to traverse a graph level by level from a given start node.

QueueSearchingGraphsALEX - Alternative Experts
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2
Behavioral & Leadership15 questions · ~168 min
Prioritizing Competing DeadlinesEasy

Tests prioritization under pressure, including trade-off judgment, stakeholder communication, and ownership of outcomes.

OwnershipDealing With AmbiguityPrioritizationALEX - Alternative Experts
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3
More topics4 questions · ~45 min
Second Highest Without AggregatesHard
Practice

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsALEX - Alternative Experts
Describe Newton's LawsEasy

Assesses foundational knowledge and clear verbal explanation of core principles.

backgroundALEX - Alternative Experts
Null Handling in SQLMedium

Tests your ability to write correct SQL logic when NULLs affect filtering, joins, and aggregations.

null handlingsqldata integrityALEX - Alternative Experts
Explain Entropy ClearlyEasy

Evaluates ability to explain a complex concept clearly and accurately.

backgroundALEX - Alternative Experts

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
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