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Loop

Web appLearnOpen now

Interview prep that shows its work.

Loop on a laptop: Two pointers, animated step by step
Loop on a phone: Loop on a phone

Data structures, system design and AI engineering, taught through 59 step-by-step animations and a curated set of practice problems.

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Free in your browser. Nothing to install.

More screens

  • Loop on a laptop: Your progress across every track

    Your progress across every track

  • Loop on a laptop: Consistent hashing, drawn out

    Consistent hashing, drawn out

  • Loop on a laptop: How an AI orchestrator hands out work

    How an AI orchestrator hands out work

  • Loop on a laptop: A problem with hints and your notes

    A problem with hints and your notes

  • Loop on a phone: Animations work on a phone too

    Animations work on a phone too

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