Pillar

DSA

Algorithmic foundations for interviews and real-world performance.

Master arrays first: unlock O(1) indexing, amortized appends, and the problem-solving backbone of interviews.

Linked lists hide real power behind stacks and queues. See why head inserts are O(1) and tails become O(n).

Trees hide deep structure; master DFS, BFS, BSTs, and tries to solve tree problems.

Graphs hide in plain sight in code; spot them, map them, and conquer traversal with DFS, BFS, and shortest paths.