These are Data Structures questions of the kind Flipkart actually asks — the patterns reported from Flipkart's AI-engineering rounds, where design trade-offs, scale and failure modes matter as much as definitions. 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.
Flipkart Data Structures concept questions
Design the data structures for a browser's back/forward navigation. Then: what breaks if you use two queues instead?
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An order-tracking dashboard must show the 10 most-ordered products, updated as crores of order events stream in. What do you maintain, and what do you explicitly NOT do?
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Flipkart Data Structures applied & hands-on questions
For arr = [1, 3, -1, -3, 5, 3, 6, 7] and window k = 3, output the maximum of every window — in O(n) total, using a deque.
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How to use this page: Flipkart 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 Flipkart Data Structures rounds test.