Edit Distance is Context-Free via Pushdown Automata (ToC Problems #13)

Here we show that the edit distance of two strings at most 1 is context-free by giving a strategy and a PDA to recognize the language. Try to extend this to edit distance at most k for any k!

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▶ABOUT ME◀ I am a professor of Computer Science, and am passionate about CS theory. I have taught many courses at several different universities, including several sections of undergraduate and graduate theory-level classes. ... https://www.youtube.com/watch?v=EjX5S2SWe3s