Interview guides / android
Top K frequent: Android Interview Question
Top K frequent interview question with a clear example answer for Android engineers. Practice with AceMobileInterview.
This is a common Android interview topic: Top K frequent.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.Return the k most frequent elements. Compare heap vs bucket sort approaches.
Count with HashMap, then min-heap of size k (O(n log k)) or bucket by frequency (O(n)). Discuss when k ≈ n and Kotlin’s PriorityQueue / sortedBy.
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