Software Engineering
DSA Interview Questions — Coding Round Master Guide
Published 8 June 2026Updated Today13 min read
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Placement & Career Content
DSA Interview Questions — Coding Round Master Guide
Coding rounds eliminate the largest share of campus applicants. A pattern-based approach beats random problem grinding for TCS CodeVita, Amazon OA, and onsite whiteboard rounds.
Top patterns by frequency
- Two pointers & sliding window
- Binary search on answer
- BFS/DFS on grids and graphs
- Top K with heaps
- Prefix sums
- Monotonic stack
- 1D/2D dynamic programming
Weekly schedule (8 weeks)
- Weeks 1–2: Arrays, strings, hashing (80 problems)
- Weeks 3–4: Linked lists, stacks, queues, trees (70 problems)
- Weeks 5–6: Graphs, heaps, intervals (60 problems)
- Weeks 7–8: DP + weekly contests + mistake log review
Interview execution tips
Repeat the problem aloud, clarify edge cases, propose brute force then optimize, code cleanly, and test with custom examples before saying done.
Access DSA interview questions and the DSA roadmap.
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