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Quicksort is an efficient, general-purpose sorting algorithm. Quicksort was developed by British computer scientist Tony Hoare in 1959 [1] and published in 1961. [2] It is still a commonly used algorithm for sorting. Overall, it is slightly faster than merge sort and heapsort for randomized data, particularly on larger distributions. [3]
The important thing here isn't the data structure - it's trivial to implement an out-of-place stable quicksort for arrays, by using a stable out-of-place partition operation (just count the number of elements in each partition, and keep two pointers into the output array while copying elements first from the left partition, then the right ...
Therefore I motion this reverts to quicksort not being stable unless someone posts URLs to white papers that indicate that recent research indicate that Quicksort can be made stable. NOTE: Quicksort for linked lists can be stable, but I am talking about the array version which I believe this Wiki article addresses.
Efficient implementations of quicksort (with in-place partitioning) are typically unstable sorts and somewhat complex but are among the fastest sorting algorithms in practice. Together with its modest O(log n) space usage, quicksort is one of the most popular sorting algorithms and is available in many standard programming libraries.
qsort is a C standard library function that implements a sorting algorithm for arrays of arbitrary objects according to a user-provided comparison function. It is named after the "quicker sort" algorithm [1] (a quicksort variant due to R. S. Scowen), which was originally used to implement it in the Unix C library, although the C standard does not require it to implement quicksort.
Hoare's most significant work has been in the following areas: his sorting and selection algorithm (Quicksort and Quickselect), Hoare logic, the formal language communicating sequential processes (CSP) used to specify the interactions between concurrent processes (and implemented in various programming languages such as occam), structuring ...
Multi-key quicksort, also known as three-way radix quicksort, [1] is an algorithm for sorting strings.This hybrid of quicksort and radix sort was originally suggested by P. Shackleton, as reported in one of C.A.R. Hoare's seminal papers on quicksort; [2]: 14 its modern incarnation was developed by Jon Bentley and Robert Sedgewick in the mid-1990s. [3]
While the Quick Sort article provides a comprehensive explanation of the algorithm, it could benefit from more real-world examples of how Quick Sort is used in different domains. For instance, the article could discuss how Quick Sort is used in data processing, image processing , or network analysis, and how it compares to other sorting ...