Stage 3 — Recursive & Hierarchical · Module 19
PriorityHeaps
Array-backed complete trees, heapify's real cost, two-heaps, k-way merge, top-k.
- Concept lessons
- 2
- Problems
- 6
- Practice
- Hub
- Status
- Live
Concept map
Lessons
Practice
Priority in O(log n) — top-K and running medians live here.