منابع مشابه
Unshuffling a Square is NP-Hard
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 pol...
متن کاملTrainyard is NP-hard
Recently, due to the widespread diffusion of smart-phones, mobile puzzle games have experienced a huge increase in their popularity. A successful puzzle has to be both captivating and challenging, and it has been suggested that this features are somehow related to their computational complexity [5]. Indeed, many puzzle games – such as Mah-Jongg, Sokoban, Candy Crush, and 2048, to name a few – a...
متن کاملCandy Crush is NP-hard
We prove that playing Candy Crush to achieve a given score in a fixed number of swaps is NP-hard.
متن کاملProtein design is NP-hard.
Biologists working in the area of computational protein design have never doubted the seriousness of the algorithmic challenges that face them in attempting in silico sequence selection. It turns out that in the language of the computer science community, this discrete optimization problem is NP-hard. The purpose of this paper is to explain the context of this observation, to provide a simple i...
متن کاملDiploid Alignment is NP-hard
Human genomes consist of pairs of homologous chromosomes, one of which is inherited from the mother and the other from the father. Species, such as human, with pairs of homologous chromosomes are called diploid. Sequence analysis literature is, however, almost solely built under the model of a single haplotype sequence representing a species. This fundamental choice is apparently due to the hug...
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ژورنال
عنوان ژورنال: Journal of Computer and System Sciences
سال: 2014
ISSN: 0022-0000
DOI: 10.1016/j.jcss.2013.11.002