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Difficulty: Medium

Hashing and Frequency Maps

Use Hashing and Frequency Maps as a 20-question checkpoint for coding interviews and algorithm revision. The attempt uses a…

Hashing, Two Pointers & Sliding Window

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Data Structures & Algorithms
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Difficulty: Medium

DSA Interview Mock: SDE 1 Round

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Move beyond surface-level recall with DSA Interview Mock: SDE 1 Round in this 30-question interview-focused practice test. It is structured for coding interviews and algorithm revision, and the attempt uses a 45-minute timer so you can practise with clear conditions. ⚙️ Skills tested: The questions cover trees, graphs, and traversals; arrays, strings, and hash maps; linked lists, stacks, and queues; sliding-window and two-pointer techniques; encapsulation and invariants; and asynchronous processing and queues. Rather than rewarding definitions alone, the set tests how concepts behave under constraints, failures, and changing requirements. Use the result as a revision checkpoint, return to weak concepts, and retry when you can explain why each alternative is right or wrong; the answer explanations provide a focused review path.

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Heaps and Priority Queues

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QuizMaker

Build confidence in Heaps and Priority Queues with this 20-question mock test, designed for coding interviews and algorithm revision. The attempt uses a 30-minute timer so you can practise with clear conditions. 📚 Inside the quiz: The questions cover heaps and priority queues; asynchronous processing and queues; linked lists, stacks, and queues; time and space complexity; and greedy decisions and proof of correctness. Each prompt is intended to reveal whether the idea can be applied, not merely recognised by name. Review the reasoning behind missed answers, refresh the weakest concepts, and use a second attempt to confirm improvement; the answer explanations provide a focused review path.

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BST and Tree Property Problems

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QuizMaker

Build confidence in BST and Tree Property Problems with this 20-question mock test, designed for coding interviews and algorithm revision. The attempt uses a 30-minute timer so you can practise with clear conditions. 🎯 Coverage: The questions cover trees, graphs, and traversals; encapsulation and invariants; time and space complexity; linked lists, stacks, and queues; and greedy decisions and proof of correctness. The question mix checks recall, application, and the reasoning needed to distinguish between plausible choices. Turn uncertain answers into a focused revision list, then return when the distinctions between the choices are clear; the answer explanations provide a focused review path.

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DP Foundations and Memoization

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Move beyond surface-level recall with DP Foundations and Memoization in this 20-question mock test. It is structured for coding interviews and algorithm revision, and the attempt uses a 30-minute timer so you can practise with clear conditions. 🎯 Coverage: The questions cover dynamic programming and memoization; caching and hot-key protection; time and space complexity; and greedy decisions and proof of correctness. Use the variety to check both what you remember and how reliably you can apply it in a new situation. Use the score to locate fragile knowledge and revise those areas before repeating the same question set; the answer explanations provide a focused review path.

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Linked List Pointer Techniques

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QuizMaker

Prepare more deliberately for coding interviews and algorithm revision with Linked List Pointer Techniques. This 20-question mock test turns the topic into a structured practice session. The attempt uses a 30-minute timer so you can practise with clear conditions. 🎯 Coverage: The questions cover linked lists, stacks, and queues; time and space complexity; and greedy decisions and proof of correctness. The sequence moves from foundational recall toward comparison, application, and careful elimination of distractors. Turn uncertain answers into a focused revision list, then return when the distinctions between the choices are clear; the answer explanations provide a focused review path.

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Array and String Pattern Reasoning

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QuizMaker

Build confidence in Array and String Pattern Reasoning with this 20-question mock test, designed for coding interviews and algorithm revision. The attempt uses a 30-minute timer so you can practise with clear conditions. 📚 Inside the quiz: The questions cover arrays, strings, and hash maps; encapsulation and invariants; time and space complexity; and greedy decisions and proof of correctness. Each prompt is intended to reveal whether the idea can be applied, not merely recognised by name. Turn uncertain answers into a focused revision list, then return when the distinctions between the choices are clear; the answer explanations provide a focused review path.

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Array Prefix, Suffix, and Range Techniques

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QuizMaker

Build confidence in Array Prefix, Suffix, and Range Techniques with this 20-question mock test, designed for coding interviews and algorithm revision. The attempt uses a 30-minute timer so you can practise with clear conditions. 📚 Inside the quiz: The questions cover arrays, strings, and hash maps; time and space complexity; and greedy decisions and proof of correctness. Each prompt is intended to reveal whether the idea can be applied, not merely recognised by name. Use the result as a revision checkpoint, return to weak concepts, and retry when you can explain why each alternative is right or wrong; the answer explanations provide a focused review path.

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Binary Trees and Traversals

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QuizMaker

Use Binary Trees and Traversals as a 20-question checkpoint for coding interviews and algorithm revision. The attempt uses a 30-minute timer so you can practise with clear conditions. 🎯 Coverage: The questions cover trees, graphs, and traversals; linked lists, stacks, and queues; asynchronous processing and queues; time and space complexity; and greedy decisions and proof of correctness. Each prompt is intended to reveal whether the idea can be applied, not merely recognised by name. Use the result as a revision checkpoint, return to weak concepts, and retry when you can explain why each alternative is right or wrong; the answer explanations provide a focused review path.

20 questions · 30 min
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