Bifalgorithm post · Computer science one · Examples
How does the C standard library function qsort() work?
How does the C standard library function qsort() work? (Computer science one · Examples) — "The standard library also provides a generic sorting function, qsor…
Ideas in this flowchart
- The standard library provides qsort() as a generic sorting function.
- qsort() sorts arrays using a caller-provided comparator function.
- The name qsort() does not guarantee that Quick Sort is used.
- Modern implementations may use Merge Sort or non-recursive hybrid Quick Sort algorithms.
- Its prototype and parameters resemble the search functions, but qsort() has no key parameter.
- The array is not const because sorting changes its contents.
- Elements are ordered in ascending order according to the comparator.
- The function prototype is void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)).
- base is a pointer to an array of elements.
- nmemb specifies the number of elements in the array.
- size specifies the size in bytes of each element, typically using sizeof().
- compar is the comparator function used to order the elements.