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Data structures interview questions on arrays, trees, graphs, and hash tables.
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Top Data Structures Interview Questions
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1
Implement a hash table
Hint: Hashing, collision handling
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2
Explain tree traversals
Hint: Preorder, inorder, postorder, BFS
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3
What is a balanced tree?
Hint: AVL, Red-Black trees
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4
Implement a graph
Hint: Adjacency list vs matrix
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5
When to use stack vs queue?
Hint: LIFO vs FIFO use cases
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6
What is a heap?
Hint: Priority queue implementation
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