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Past Questions

Data Structures — Past Exam Questions (2020–2026) with Solutions

Seven years of data-structures exams with fully worked solutions — arrays and lists through graphs and heaps.

Computer SciencePDF · 120 pages6,880 downloadsIntermediate

About this document

Every question from 2020 to 2026, grouped by topic and answered in full. Use them to find the patterns examiners return to year after year.

Solutions show the reasoning, not just the final answer, so you can learn the method.

What's inside

  • Arrays, linked lists and complexity
  • Stacks, queues and recursion
  • Trees, heaps and balancing
  • Hashing and hash maps
  • Graphs, traversal and shortest paths

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Prof. Marcus Lowe

Computer Science

Contributes programming guides, past papers and machine-learning primers.