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hardBlind 75

Merge K Sorted Lists

You know how to merge two sorted lists—but what happens when there are k of them? Interviewers use this to see if you can scale your thinking and pick the right data structure for efficiency. The heap-based approach is elegant, but the real signal is how you reason about the tradeoffs.

Linked ListHeap / Priority QueueBinary Search

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1Merge K Sorted Listshard
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