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Rod Cutting (DP Intro)

4 minute read

Rod-cutting as DP: brute force vs memoization vs bottom-up, plus solution reconstruction

AVL Search Tree

3 minute read

AVL trees: balance invariants, rotations, and why height stays O(log n)

Binary Search Tree (BST)

5 minute read

Binary search trees: core operations, successors, insertion, and deletion via transplant

Tree Basics & Tricks

2 minute read

Tree terminology, traversals, and a few practical iterative traversal tricks

Hashing

6 minute read

Hash tables from direct addressing to chaining and open addressing, with probe analysis