Statistics

   

Alternate Approach of Comparison for Selection Problem

Authors: Nikhil Shaw

In computer science, a selection algorithm is an algorithm for finding the kth smallest number in a list or array; such a number is called the kth order statistic. This includes the cases of finding the minimum, maximum, and median elements. There are O(n) (worst-case linear time) selection algorithms, and sublinear performance is possible for structured data; in the extreme, O(1) for an array of sorted data. Selection is a subproblem of more complex problems like the nearest neighbour and shortest path problems. Many selection algorithms are derived by generalizing a sorting algorithm, and conversely some sorting algorithms can be derived as repeated application of selection. This new algorithm although has worst case of O(n^2), the average case is of near linear time for an unsorted list.

Comments: 8 Pages.

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Submission history

[v1] 2017-01-10 13:45:13
[v2] 2017-01-23 17:53:56

Unique-IP document downloads: 53 times

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