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Such a component or property is called a sort key. For example, the items are books, the sort key is the title, subject or author, and the order is alphabetical. A new sort key can be created from two or more sort keys by lexicographical order. The first is then called the primary sort key, the second the secondary sort key, etc.
Radix sort is an algorithm that sorts numbers by processing individual digits. n numbers consisting of k digits each are sorted in O(n · k) time. Radix sort can process digits of each number either starting from the least significant digit (LSD) or starting from the most significant digit (MSD). The LSD algorithm first sorts the list by the ...
For example, the best case for a simple linear search on a list occurs when the desired element is the first element of the list. Development and choice of algorithms is rarely based on best-case performance: most academic and commercial enterprises are more interested in improving average-case complexity and worst-case performance .
Specific applications of search algorithms include: Problems in combinatorial optimization, such as: . The vehicle routing problem, a form of shortest path problem; The knapsack problem: Given a set of items, each with a weight and a value, determine the number of each item to include in a collection so that the total weight is less than or equal to a given limit and the total value is as ...
In computer science, a trie (/ ˈ t r aɪ /, / ˈ t r iː /), also called digital tree or prefix tree, [1] is a type of search tree: specifically, a k-ary tree data structure used for locating specific keys from within a set. These keys are most often strings, with links between nodes defined not by the entire key, but by individual characters.
For example, when you are looking at shoes on the Nike website you can type Puma.com and continue surfing associatively, but your intuitive recalling of shoes websites is limited and at some point you will be forced to perform a search. The difference between searching and associative browsing is in the "flow" of the events. While in ...
In computer science, integer sorting is the algorithmic problem of sorting a collection of data values by integer keys. Algorithms designed for integer sorting may also often be applied to sorting problems in which the keys are floating point numbers, rational numbers, or text strings. [1]
Using this method, Cole shows that a parametric search algorithm in which the test algorithm is sorting may be completed using only a logarithmic number of calls to the decision algorithm, instead of the () calls made by Megiddo's original version of parametric search. Instead of using the AKS sorting network, it is also possible to combine ...