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Heap

• 29 Dec, 2025
• • Heaps

Advanced Heap & Priority Queue

Week 23 notes: heaps at interview-hard level. The two-heap running median, k-way merge, greedy scheduling with a priority queue, and the lazy-deletion trick for removing stale entries.

• 25 Aug, 2025
• • Heaps

Heaps & Priority Queues

Week 5 notes on heaps: the structure that always keeps its most extreme element one pop away, and how that makes top-K and streaming problems easy.