Pivoting To Understand Quicksort [Part 2]

This is the second installment in a two-part series on Quicksort. If you haven’t readPart 1of this series, I recommend checking that out first!

In part 1 of this series, we walked through how the quicksort algorithm works on a high level. In case you need a quick refresher, this algorithm has two important aspects: a pivot element, and two partitions around the pivot.

We’ll remember that quicksort functions by choosing a pivot point (remember, this is only somewhat random!), and sorting the remaingin elements so that items smaller than the pivot are to the left, or in front of the pivot, and items that are larger than the pivot are to the right, or behind the pivot. These two halves become the partitions, and the algorithm recursively calls itself upon both of these partitions until the entire list is divided down into single-item lists. Then, it combines them all back together again.

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