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Lessons (5)

• Heaps & Priority Queues

  A heap always gives you the smallest (or largest) item in O(1) and adds or removes items …

• DSA Interview Patterns Cheat Sheet

  … BFS, DFS, topological sort 6 Heaps, binary search on the answer, intervals 7 Backtracking 8 Dynamic programming Solve …

• Stacks & Queues

  … Highest priority out first ER triage, Dijkstra (see Heaps ) Circular buffer Fixed size, wraps around Audio buffers, recent …

• Graphs: BFS & DFS

  … It powers GPS navigation and network routing. (See Heaps & Priority Queues .) Key takeaways - Graph = nodes + edges; directed or …

• Sorting Algorithms

  … n log n) O(n²) O(log n) ❌ Heap sort O(n log n) O(n log n …