▶ Hands-on labs

Playground.

Don't just read about it — run it.

Every lab here is a real, hand-built model of the idea: the algorithm actually runs, one visible step at a time. Change the input, press play, step back, try to break it.

  • 10 interactive labs
  • Step forward & back
  • Runs in your browser

Algorithms

Watch every compare, swap and visit.

Data structures

Add, remove and follow the pointers.

Machine learning & neural nets

Change a number, watch the model react.

How code runs

Step inside a running program.