Top "Quicksort" questions

Quicksort is a sorting algorithm invented by C. A. R. Hoare that has an average-case complexity of O(n log n) and worst-case quadratic complexity.

Quicksort with Python

I am totally new to python and I am trying to implement quicksort in it. Could someone please help me …

python algorithm sorting quicksort
Why is quicksort better than mergesort?

I was asked this question during an interview. They're both O(nlogn) and yet most people use Quicksort instead of …

algorithm sorting language-agnostic quicksort mergesort
Quicksort: Choosing the pivot

When implementing Quicksort, one of the things you have to do is to choose a pivot. But when I look …

algorithm sorting pseudocode quicksort
O(N log N) Complexity - Similar to linear?

So I think I'm going to get buried for asking such a trivial question but I'm a little confused about …

language-agnostic complexity-theory quicksort
median of three values strategy

What is the median of three strategy to select the pivot value in quick sort? I am reading it on …

algorithm sorting quicksort
Quicksort vs heapsort

Both quicksort and heapsort do in-place sorting. Which is better? What are the applications and cases in which either is …

algorithm sorting quicksort heapsort
Quick sort Worst case

I'm working on the program just needed in the following to understand it better. What is the worst case running …

algorithm big-o quicksort
Worst case for QuickSort - when can it occur?

When analyzing QS, every one always refers to the "almost sorted" worst case. When can such a scenario occur with …

algorithm quicksort
Exactly how many comparisons does merge sort make?

I have read that quicksort is much faster than mergesort in practice, and the reason for this is the hidden …

algorithm sorting complexity-theory quicksort mergesort
error: called object type 'int' is not a function or function pointer

I have a quicksort that I wrote here: void swap(int& a, int& b); int mid(int lo, …

c++ quicksort