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haroldl
on July 22, 2022
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Ask HN: What are some cool but obscure data struct...
In a Scrabble AI coding contest I discovered the GADDAG which is like a trie but indexes all of the words forwards and backwards from any starting point within the words.
https://en.wikipedia.org/wiki/GADDAG#:~:text=A%20GADDAG%20is...
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https://en.wikipedia.org/wiki/GADDAG#:~:text=A%20GADDAG%20is....