Quicksort algorithm


See complete series on sorting algorithms here:

In this lesson, we have explained Quick sort algorithm and implemented it in C++. Quick sort is a divide and conquer algorithm that has an average case time complexity of O(nlogn).

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  1. That was a great explanation.
    Inspired by your content I created a video with some animations and visuals. Quick Sort can be fun 😀
    Check it out here https://youtu.be/2SRzQEOaLYw

  2. Small correction for 12:21 – the call made is Q(A, 0, 0) this corresponds to A(start, pivot-1) where pivot in this case is 1 therefore 1-1 = 0 and thus the sentinel still holds since start < end is False: 0 !< 0 it is equal therefore we won't execute but we'll simply return.


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