## Write a c program for printing all permutation of a string

Write a c program for printing all permutation of a string is a good problem to learn recursive backtracking algorithm.Let us consider a string “abcd“. Then permutation of abc...

## quicksort:implementation in C programming

Quicksort algorithm is very popular algorithm.in average case it is O(NlogN) complexity however only issue with quicksort is the possibility that it degrades to O(n2) on large data sets...

## Quick sort algorithm in glibc library:qsort and its comparator

Quicksort,is a sorting algorithm developed by Tony Hoare. average case makes O(n log n)comparisons to sort n items. In the worst case it makes O(n2) comparisons.Quicksort is often faster...