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Algorithms to which the Method of Four Russians may be applied include: computing the transitive closure of a graph, Boolean matrix multiplication, edit distance calculation, sequence alignment, index calculation for binary jumbled pattern matching. In each of these cases it speeds up the algorithm by one or two logarithmic factors.
List scheduling is a greedy algorithm for Identical-machines scheduling.The input to this algorithm is a list of jobs that should be executed on a set of m machines. The list is ordered in a fixed order, which can be determined e.g. by the priority of executing the jobs, or by their order of arrival.
The simplest pancake sorting algorithm performs at most 2n − 3 flips. In this algorithm, a kind of selection sort , we bring the largest pancake not yet sorted to the top with one flip; take it down to its final position with one more flip; and repeat this process for the remaining pancakes.
The HRU security model (Harrison, Ruzzo, Ullman model) is an operating system level computer security model which deals with the integrity of access rights in the system. It is an extension of the Graham-Denning model, based around the idea of a finite set of procedures being available to edit the access rights of a subject on an object .
[3] [4] Traditionally, the bc calculator program (with infix notation) was implemented on top of dc, now the implementation of GNU dc bases on bc. [5] This article provides some examples in an attempt to give a general flavour of the language; for a complete list of commands and syntax, one should consult the man page for one's specific ...
For example, in Perl each flip-flop operator has its own state, shared among all the threads, [4] the other programming languages do the same. To work around this limitation, the flip-flop operator would have to be modeled as an abstract data type, parameterized with: a predicate that tells whether to switch the flip-flop on,
When C is input, the output is always C. Four of the sixteen have zero in one corner only, so the output of vector-matrix multiplication with Boolean arithmetic is always D, except for C input. Nine further logical matrices need description to fill out the labelled transition system where the matrices label the transitions.
For examples of this specification-method applied to the addition algorithm "m+n" see Algorithm examples. An example in Boolos-Burgess-Jeffrey (2002) (pp. 31–32) demonstrates the precision required in a complete specification of an algorithm, in this case to add two numbers: m+n. It is similar to the Stone requirements above.