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CSP LabBy Educator Today
AP CSP course

Topic 2.2 · Interactive concept example

Decode losslessly or discard information

  • Dictionary reconstruction
  • Lossy collisions
  • Purpose and recovery requirements

Change it · step through · explain

Change an input, predict what will happen, then advance one step. Read why the state changes, reset and experiment. This fixed teaching model does not save progress or award XP.

Ready · Make a prediction

Ready to explore: Decode losslessly or discard information
  1. EncodingdictionaryWaiting
  2. Original messageteam go teamWaiting

Ready to explore: Decode losslessly or discard information

Why: Change an input, predict the first effect, then advance one step.

Try this: Change one input or choose another listed case. Predict the effect, reset and compare the states and governing rule.