These are Data Structures questions of the kind Accenture actually asks — the patterns that keep coming back in Accenture's AI project interviews, where what matters is applying Data Structures sensibly for clients rather than research depth. Treat this page as a mock interview: say every answer out loud before revealing it. If one surprises you, the lesson behind it is linked at the bottom.
Accenture Data Structures concept questions
You have two lists of customer IDs — last month's buyers and this month's. Find customers who bought in BOTH months, efficiently. Walk through the structure choice.
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Match each system to a data structure, with one line of justification: (1) call-center hold line, (2) editor undo, (3) contact search by name prefix, (4) 'top 5 trending products', (5) checking duplicate PAN registrations.
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Accenture Data Structures applied & hands-on questions
In [4, 1, 2, 2, 4, 4, 1, 2, 4, 1], find the element with the SECOND highest frequency. One pass to count, one to answer.
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How to use this page: Accenture rarely asks something you've never seen — they ask a standard Data Structures concept and then push one level deeper ("why?", "what would you do if..."). Master the concept in the Data Structures course lessons, and the follow-up stops being scary.
Keep practising: Hash Tables, Linked Lists, Heaps and Choosing the Right Structure cover what most Accenture Data Structures rounds test — and the Accenture exam guide covers the rest of their selection process.