Build a text editor in 4 parts: buffer ops, dual-stack undo/redo, AI autocomplete with Trie + word frequencies, and real-time collaboration/OT.

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Reported in public interview compilations — OpenAI

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Build a text editor in 4 parts: buffer ops, dual-stack undo/redo, AI autocomplete with Trie + word frequencies, and real-time collaboration/OT.

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