Algorithms
Press play and watch how it works. Beginner-friendly, step-by-step visualizers — no setup, no sign-up.
Start here
Big-O Playground→
Never heard of Big-O? Start here: a tiny story, count steps with the computer, then watch real growth curves. No math degree required.
O(log n)O(√n)O(n²)
Live
Sorting→
Bubble, Selection & Insertion sort — animated bars, synchronized pseudocode, speed control, and live comparison/swap counters.
BubbleSelectionInsertion
Coming next
Counting sortFrequency arrayMerge sortQuick sortBinary searchPrefix sumsTwo pointersSliding window
See the full roadmap →