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In some sense, the usual input of closest string contains information, that does not contribute to the hardness of the problem. For example, if some strings contain the character a , but none contains the character z , replacing all a s with z s would yield an essentially equivalent instance, that is: from a solution of the modified instance ...
(empty set) ∅ denoting the set ∅. (empty string) ε denoting the set containing only the "empty" string, which has no characters at all. (literal character) a in Σ denoting the set containing only the character a. Given regular expressions R and S, the following operations over them are defined to produce regular expressions:
In computer science, the two-way string-matching algorithm is a string-searching algorithm, discovered by Maxime Crochemore and Dominique Perrin in 1991. [1] It takes a pattern of size m, called a “needle”, preprocesses it in linear time O(m), producing information that can then be used to search for the needle in any “haystack” string, taking only linear time O(n) with n being the ...
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Superintendent of Charles County Public Schools, Maria V. Navarro, revealed in a Dec. 5 statement that the group had been visiting the restaurant “as part of community-based instruction (CBI)”
American Airlines has settled a racial discrimination lawsuit filed by three Black men who alleged they were thrown off a plane in January for a false complaint about body odor.
A string-searching algorithm, sometimes called string-matching algorithm, is an algorithm that searches a body of text for portions that match by pattern. A basic example of string searching is when the pattern and the searched text are arrays of elements of an alphabet ( finite set ) Σ.
Florian Wirtz again made the difference for Bayer Leverkusen in a 2-1 win at Union Berlin in the Bundesliga on Saturday. Leverkusen coach Xabi Alonso initially rested his star player, but sent ...