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- W2163733217 abstract "A shuffle of two strings is formed by interleaving the characters into a new string, keeping the characters of each string in order. A string is a square if it is a shuffle of two identical strings. There is a known polynomial time dynamic programming algorithm to determine if a given string z is the shuffle of two given strings x,y; however, it has been an open question whether there is a polynomial time algorithm to determine if a given string z is a square. We resolve this by proving that this problem is NP-complete via a many-one reduction from 3- Partition." @default.
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- W2163733217 date "2014-06-01" @default.
- W2163733217 modified "2023-10-10" @default.
- W2163733217 title "Unshuffling a square is NP-hard" @default.
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- W2163733217 doi "https://doi.org/10.1016/j.jcss.2013.11.002" @default.
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