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15 data structures, visualized one by one — no boring slides, just live animations, Python code, and the time complexity that ...

Three problem-solving patterns explained from zero: one million sorted prices, find the two that hit your budget. Checking every ...

Shortest paths explained from zero, on one city at midnight: the navigation sends an ambulance down a jammed motorway, ...

Topological sort explained from zero: a crane drops the roof of a new house straight onto the foundation, no walls, and the whole ...

Minimum spanning trees explained from zero: 200 towns and exactly 950 km of fibre cable. The careless crew runs out after 21 ...

Heaps and priority queues explained from zero in a busy emergency room. A million urgent tasks done the naive way: projected at ...

Greedy algorithms explained from zero: a hiker in thick fog follows one rule, always step uphill. Every step is the best step she can ...

Tries explained from zero: you type A, L, G and your phone suggests algorithm before your thumb lifts. Checking all 117000 words ...

Dynamic programming explained from zero: a laptop counts the ways to climb 40 stairs and needs 27 seconds and 331 million ...

Balanced trees explained from zero. Last episode 100000 sorted houses built one road, 100000 houses long. Today the same ...

Binary search trees explained from zero with one town where every road splits in two. 100000 random house numbers: built in ...

Backtracking explained from zero: eight queens on a chessboard, and not one may attack another. Trying every way to place them ...

Graphs, breadth-first search and depth-first search explained from zero, on one cave: a lost caver walks in circles, a rescue team ...