Coding heap
Kth Largest Element
LC 215. Heap vs quickselect. State average vs worst case before you pick.
Week 2Wednesday 21 OctoberHeaps
Day 9: Heaps and top-K
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Coding heap
Merge K Sorted Lists
LC 23. Heap of heads. Complexity with k lists and n total nodes.
Coding heap
Top K Frequent Elements
LC 347. Bucket sort vs heap. Interview follow-up: top-K in a stream.
System design caching
Redis as cache vs primary
Persistence modes, eviction, and when Redis as source-of-truth is a trap.