Algorithm playground

Change the input, predict the result and inspect every step.

Build a graph visually

Vertices start at zero. Applying uses free BFS, which counts hops and ignores weights. The JSON remains editable.

Graph settingsVertices DirectedFromToWeight

Choose a free algorithm

Big-O notationTime vs space complexityArrays & dynamic arraysStackHash functionsBinary tree & traversalsBinary search treeBubble sortSelection sortInsertion sortLinear searchBinary searchGraph representationsBreadth-first searchDepth-first searchGreedy algorithmsDivide & conquerBacktrackingNaive string matchingEuclidean GCDSieve of EratosthenesCryptographic hash functions

Shared JSON input

Use the input format documented in the selected lesson. Arrays use [4,1,6,2,5,3]. Structured inputs use JSON objects.

Experimental runs do not mark lessons complete. Open the curriculum for explanations and quizzes.

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